feat(i18n): 아레나 관련 번역 추가

- 아레나 화면 네비게이션 연결
- 프론트 화면 UI에 아레나 접근 버튼 추가

lib/data/game_text_l10n.dart

@@ -1216,6 +1216,12 @@ String get uiHallOfFame {
   return 'Hall of Fame';
 }
 
+String get uiLocalArena {
+  if (isKoreanLocale) return '로컬 아레나';
+  if (isJapaneseLocale) return 'ローカルアリーナ';
+  return 'Local Arena';
+}
+
 String get frontDescription {
   if (isKoreanLocale) return '레트로 감성의 오프라인 싱글플레이어 RPG';
   if (isJapaneseLocale) return 'レトロ感のあるオフラインシングルプレイヤーRPG';

lib/src/app.dart

@@ -12,7 +12,10 @@ import 'package:asciineverdie/src/core/model/pq_config.dart';
 import 'package:asciineverdie/src/core/notification/notification_service.dart';
 import 'package:asciineverdie/src/core/storage/save_manager.dart';
 import 'package:asciineverdie/src/core/storage/save_repository.dart';
+import 'package:asciineverdie/src/core/storage/hall_of_fame_storage.dart';
 import 'package:asciineverdie/src/core/storage/settings_repository.dart';
+import 'package:asciineverdie/src/core/model/hall_of_fame.dart';
+import 'package:asciineverdie/src/features/arena/arena_screen.dart';
 import 'package:asciineverdie/src/features/front/front_screen.dart';
 import 'package:asciineverdie/src/features/front/save_picker_dialog.dart';
 import 'package:asciineverdie/src/features/game/game_play_screen.dart';
@@ -46,10 +49,12 @@ class _AskiiNeverDieAppState extends State<AskiiNeverDieApp> {
   late final NotificationService _notificationService;
   late final SettingsRepository _settingsRepository;
   late final AudioService _audioService;
+  late final HallOfFameStorage _hallOfFameStorage;
   bool _isCheckingSave = true;
   bool _hasSave = false;
   SavedGamePreview? _savedGamePreview;
   ThemeMode _themeMode = ThemeMode.system;
+  HallOfFame _hallOfFame = HallOfFame.empty();
 
   @override
   void initState() {
@@ -69,12 +74,25 @@ class _AskiiNeverDieAppState extends State<AskiiNeverDieApp> {
     _notificationService = NotificationService();
     _settingsRepository = SettingsRepository();
     _audioService = AudioService(settingsRepository: _settingsRepository);
+    _hallOfFameStorage = HallOfFameStorage();
 
     // 초기 설정 및 오디오 서비스 로드
     _loadSettings();
     _audioService.init();
     // 세이브 파일 존재 여부 확인
     _checkForExistingSave();
+    // 명예의 전당 로드
+    _loadHallOfFame();
+  }
+
+  /// 명예의 전당 로드
+  Future<void> _loadHallOfFame() async {
+    final hallOfFame = await _hallOfFameStorage.load();
+    if (mounted) {
+      setState(() {
+        _hallOfFame = hallOfFame;
+      });
+    }
   }
 
   /// 저장된 설정 불러오기
@@ -443,8 +461,10 @@ class _AskiiNeverDieAppState extends State<AskiiNeverDieApp> {
       onNewCharacter: _navigateToNewCharacter,
       onLoadSave: _loadSave,
       onHallOfFame: _navigateToHallOfFame,
+      onLocalArena: _navigateToArena,
       hasSaveFile: _hasSave,
       savedGamePreview: _savedGamePreview,
+      hallOfFameCount: _hallOfFame.count,
     );
   }
 
@@ -542,6 +562,18 @@ class _AskiiNeverDieAppState extends State<AskiiNeverDieApp> {
       MaterialPageRoute<void>(builder: (context) => const HallOfFameScreen()),
     );
   }
+
+  /// 로컬 아레나 화면으로 이동
+  void _navigateToArena(BuildContext context) {
+    Navigator.of(context).push(
+      MaterialPageRoute<void>(
+        builder: (context) => const ArenaScreen(),
+      ),
+    ).then((_) {
+      // 아레나에서 돌아오면 명예의 전당 다시 로드
+      _loadHallOfFame();
+    });
+  }
 }
 
 /// 스플래시 화면 (세이브 파일 확인 중) - 레트로 스타일

lib/src/core/animation/canvas/canvas_battle_composer.dart

@@ -14,6 +14,8 @@ import 'package:asciineverdie/src/core/model/item_stats.dart';
 ///
 /// 기존 BattleComposer의 로직을 레이어 기반으로 변환.
 /// 출력: `List<AsciiLayer>` (z-order 정렬됨)
+///
+/// PvP 모드: [opponentRaceId]가 설정되면 몬스터 대신 상대 캐릭터(좌우 반전) 표시
 class CanvasBattleComposer {
   const CanvasBattleComposer({
     required this.weaponCategory,
@@ -22,6 +24,8 @@ class CanvasBattleComposer {
     required this.monsterSize,
     this.raceId,
     this.weaponRarity,
+    this.opponentRaceId,
+    this.opponentHasShield = false,
   });
 
   final WeaponCategory weaponCategory;
@@ -35,6 +39,15 @@ class CanvasBattleComposer {
   /// 무기 희귀도 (Phase 9: 무기 등급별 이펙트 색상)
   final ItemRarity? weaponRarity;
 
+  /// 상대 종족 ID (PvP 모드: 설정 시 몬스터 대신 캐릭터 표시)
+  final String? opponentRaceId;
+
+  /// 상대 방패 장착 여부 (PvP 모드)
+  final bool opponentHasShield;
+
+  /// PvP 모드 여부
+  bool get isPvP => opponentRaceId != null;
+
   /// 프레임 상수
   static const int frameWidth = 60;
   static const int frameHeight = 8;
@@ -59,6 +72,10 @@ class CanvasBattleComposer {
     final layers = <AsciiLayer>[
       _createBackgroundLayer(environment, globalTick),
       _createCharacterLayer(phase, subFrame, attacker),
+      // PvP 모드: 몬스터 대신 상대 캐릭터(좌우 반전) 표시
+      if (isPvP)
+        _createOpponentCharacterLayer(phase, subFrame, attacker)
+      else
         _createMonsterLayer(phase, subFrame, attacker),
     ];
 
@@ -246,6 +263,91 @@ class CanvasBattleComposer {
     );
   }
 
+  /// 상대 캐릭터 레이어 생성 (PvP 모드, z=1)
+  ///
+  /// 몬스터 대신 상대 캐릭터를 좌우 반전하여 표시
+  AsciiLayer _createOpponentCharacterLayer(
+    BattlePhase phase,
+    int subFrame,
+    AttackerType attacker,
+  ) {
+    // 상대 종족별 프레임 조회
+    CharacterFrame opponentFrame;
+    if (opponentRaceId != null && opponentRaceId!.isNotEmpty) {
+      final raceData = RaceCharacterFrames.get(opponentRaceId!);
+      if (raceData != null) {
+        final frames = raceData.getFrames(phase);
+        opponentFrame = frames[subFrame % frames.length];
+      } else {
+        opponentFrame = getCharacterFrame(phase, subFrame);
+      }
+    } else {
+      opponentFrame = getCharacterFrame(phase, subFrame);
+    }
+
+    if (opponentHasShield) {
+      opponentFrame = opponentFrame.withShield();
+    }
+
+    // 좌우 반전
+    final mirroredLines = _mirrorLines(opponentFrame.lines);
+
+    // 상대가 공격자인지 확인 (몬스터 역할)
+    final isOpponentAttacking =
+        attacker == AttackerType.monster || attacker == AttackerType.both;
+
+    // 페이즈별 X 위치 (몬스터와 동일하지만 캐릭터 너비 기준)
+    const opponentWidth = 6;
+    final opponentRightEdge = switch (phase) {
+      BattlePhase.idle => 48,
+      BattlePhase.prepare => isOpponentAttacking ? 45 : 48,
+      BattlePhase.attack => isOpponentAttacking ? 42 : 48,
+      BattlePhase.hit => isOpponentAttacking ? 42 : 48,
+      BattlePhase.recover => isOpponentAttacking ? 45 : 48,
+    };
+    final opponentX = opponentRightEdge - opponentWidth;
+
+    final cells = _spriteToCells(mirroredLines);
+    final opponentY = frameHeight - cells.length - 1;
+
+    return AsciiLayer(
+      cells: cells,
+      zIndex: 1,
+      offsetX: opponentX,
+      offsetY: opponentY,
+    );
+  }
+
+  /// 문자열 좌우 반전 (PvP 모드용)
+  List<String> _mirrorLines(List<String> lines) {
+    return lines.map((line) {
+      final chars = line.split('');
+      final mirrored = chars.reversed.map(_mirrorChar).toList();
+      return mirrored.join();
+    }).toList();
+  }
+
+  /// 개별 문자 미러링
+  String _mirrorChar(String char) {
+    return switch (char) {
+      '/' => r'\',
+      r'\' => '/',
+      '(' => ')',
+      ')' => '(',
+      '[' => ']',
+      ']' => '[',
+      '{' => '}',
+      '}' => '{',
+      '<' => '>',
+      '>' => '<',
+      '┘' => '└',
+      '└' => '┘',
+      '┐' => '┌',
+      '┌' => '┐',
+      _ => char,
+    };
+  }
+
   /// 이펙트 레이어 생성 (z=3, 캐릭터/몬스터 위에 표시)
   ///
   /// Phase 8: 공격자에 따라 이펙트 위치/모양 분리

lib/src/core/engine/arena_service.dart

@@ -0,0 +1,314 @@
+import 'package:asciineverdie/src/core/engine/combat_calculator.dart';
+import 'package:asciineverdie/src/core/model/arena_match.dart';
+import 'package:asciineverdie/src/core/model/equipment_item.dart';
+import 'package:asciineverdie/src/core/model/equipment_slot.dart';
+import 'package:asciineverdie/src/core/model/hall_of_fame.dart';
+import 'package:asciineverdie/src/core/model/monster_combat_stats.dart';
+import 'package:asciineverdie/src/core/util/deterministic_random.dart';
+
+/// 아레나 서비스
+///
+/// 로컬 아레나 대전 시스템의 핵심 로직 담당:
+/// - 순위 계산 및 상대 결정
+/// - 전투 실행
+/// - 장비 교환
+class ArenaService {
+  ArenaService({DeterministicRandom? rng})
+      : _rng = rng ?? DeterministicRandom(DateTime.now().millisecondsSinceEpoch);
+
+  final DeterministicRandom _rng;
+
+  // ============================================================================
+  // 상대 결정
+  // ============================================================================
+
+  /// 상대 결정 (바로 위 순위, 1위면 2위와 대결)
+  ///
+  /// [hallOfFame] 명예의 전당
+  /// [challengerId] 도전자 캐릭터 ID
+  /// Returns: 상대 캐릭터 (없으면 null)
+  HallOfFameEntry? findOpponent(HallOfFame hallOfFame, String challengerId) {
+    final ranked = hallOfFame.rankedEntries;
+    if (ranked.length < 2) return null;
+
+    final currentRank = hallOfFame.getRank(challengerId);
+    if (currentRank <= 0) return null;
+
+    // 1위면 2위와 대결
+    if (currentRank == 1) {
+      return ranked[1];
+    }
+
+    // 그 외는 바로 위 순위와 대결
+    return ranked[currentRank - 2];
+  }
+
+  // ============================================================================
+  // 전투 실행
+  // ============================================================================
+
+  /// 아레나 전투 실행
+  ///
+  /// [match] 대전 정보
+  /// Returns: 대전 결과 (승패, 장비 교환 후 캐릭터)
+  ArenaMatchResult executeCombat(ArenaMatch match) {
+    final calculator = CombatCalculator(rng: _rng);
+
+    // 도전자 스탯 (풀 HP로 시작)
+    final challengerStats = match.challenger.finalStats;
+    final opponentStats = match.opponent.finalStats;
+
+    if (challengerStats == null || opponentStats == null) {
+      // 스탯이 없으면 도전자 패배 처리
+      return ArenaMatchResult(
+        match: match,
+        isVictory: false,
+        turns: 0,
+        updatedChallenger: match.challenger,
+        updatedOpponent: match.opponent,
+      );
+    }
+
+    // 플레이어 스탯 (풀 HP로 초기화)
+    var playerCombatStats = challengerStats.copyWith(
+      hpCurrent: challengerStats.hpMax,
+      mpCurrent: challengerStats.mpMax,
+    );
+
+    // 상대를 몬스터 형태로 변환
+    var opponentMonsterStats = MonsterCombatStats.fromCombatStats(
+      opponentStats,
+      match.opponent.characterName,
+    );
+
+    // 전투 시뮬레이션
+    int turns = 0;
+    int playerAccum = 0;
+    int opponentAccum = 0;
+    const tickMs = 200;
+
+    while (playerCombatStats.isAlive && opponentMonsterStats.isAlive) {
+      playerAccum += tickMs;
+      opponentAccum += tickMs;
+
+      // 플레이어 공격
+      if (playerAccum >= playerCombatStats.attackDelayMs) {
+        final result = calculator.playerAttackMonster(
+          attacker: playerCombatStats,
+          defender: opponentMonsterStats,
+        );
+        opponentMonsterStats = result.updatedDefender;
+        playerAccum = 0;
+        turns++;
+      }
+
+      // 상대 공격 (살아있을 때만)
+      if (opponentMonsterStats.isAlive &&
+          opponentAccum >= opponentMonsterStats.attackDelayMs) {
+        final result = calculator.monsterAttackPlayer(
+          attacker: opponentMonsterStats,
+          defender: playerCombatStats,
+        );
+        playerCombatStats = result.updatedDefender;
+        opponentAccum = 0;
+      }
+
+      // 무한 루프 방지
+      if (turns > 1000) break;
+    }
+
+    final isVictory = playerCombatStats.isAlive;
+
+    // 장비 교환
+    final (updatedChallenger, updatedOpponent) = _exchangeEquipment(
+      match: match,
+      isVictory: isVictory,
+    );
+
+    return ArenaMatchResult(
+      match: match,
+      isVictory: isVictory,
+      turns: turns,
+      updatedChallenger: updatedChallenger,
+      updatedOpponent: updatedOpponent,
+    );
+  }
+
+  /// 전투 시뮬레이션 (애니메이션용 스트림)
+  ///
+  /// [match] 대전 정보
+  /// Returns: 턴별 전투 상황 스트림
+  Stream<ArenaCombatTurn> simulateCombat(ArenaMatch match) async* {
+    final calculator = CombatCalculator(rng: _rng);
+
+    final challengerStats = match.challenger.finalStats;
+    final opponentStats = match.opponent.finalStats;
+
+    if (challengerStats == null || opponentStats == null) {
+      return;
+    }
+
+    var playerCombatStats = challengerStats.copyWith(
+      hpCurrent: challengerStats.hpMax,
+      mpCurrent: challengerStats.mpMax,
+    );
+
+    var opponentMonsterStats = MonsterCombatStats.fromCombatStats(
+      opponentStats,
+      match.opponent.characterName,
+    );
+
+    int playerAccum = 0;
+    int opponentAccum = 0;
+    const tickMs = 200;
+    int turns = 0;
+
+    // 초기 상태 전송
+    yield ArenaCombatTurn(
+      challengerHp: playerCombatStats.hpCurrent,
+      opponentHp: opponentMonsterStats.hpCurrent,
+      challengerHpMax: playerCombatStats.hpMax,
+      opponentHpMax: opponentMonsterStats.hpMax,
+    );
+
+    while (playerCombatStats.isAlive && opponentMonsterStats.isAlive) {
+      playerAccum += tickMs;
+      opponentAccum += tickMs;
+
+      int? challengerDamage;
+      int? opponentDamage;
+      bool isChallengerCritical = false;
+      bool isOpponentCritical = false;
+      bool isChallengerEvaded = false;
+      bool isOpponentEvaded = false;
+      bool isChallengerBlocked = false;
+      bool isOpponentBlocked = false;
+
+      // 플레이어 공격
+      if (playerAccum >= playerCombatStats.attackDelayMs) {
+        final result = calculator.playerAttackMonster(
+          attacker: playerCombatStats,
+          defender: opponentMonsterStats,
+        );
+        opponentMonsterStats = result.updatedDefender;
+        playerAccum = 0;
+
+        if (result.result.isHit) {
+          challengerDamage = result.result.damage;
+          isChallengerCritical = result.result.isCritical;
+        } else {
+          isOpponentEvaded = true;
+        }
+      }
+
+      // 상대 공격
+      if (opponentMonsterStats.isAlive &&
+          opponentAccum >= opponentMonsterStats.attackDelayMs) {
+        final result = calculator.monsterAttackPlayer(
+          attacker: opponentMonsterStats,
+          defender: playerCombatStats,
+        );
+        playerCombatStats = result.updatedDefender;
+        opponentAccum = 0;
+
+        if (result.result.isHit) {
+          opponentDamage = result.result.damage;
+          isOpponentCritical = result.result.isCritical;
+          isChallengerBlocked = result.result.isBlocked;
+        } else {
+          isChallengerEvaded = true;
+        }
+      }
+
+      // 공격이 발생했을 때만 턴 전송
+      if (challengerDamage != null || opponentDamage != null) {
+        turns++;
+        yield ArenaCombatTurn(
+          challengerDamage: challengerDamage,
+          opponentDamage: opponentDamage,
+          challengerHp: playerCombatStats.hpCurrent,
+          opponentHp: opponentMonsterStats.hpCurrent,
+          challengerHpMax: playerCombatStats.hpMax,
+          opponentHpMax: opponentMonsterStats.hpMax,
+          isChallengerCritical: isChallengerCritical,
+          isOpponentCritical: isOpponentCritical,
+          isChallengerEvaded: isChallengerEvaded,
+          isOpponentEvaded: isOpponentEvaded,
+          isChallengerBlocked: isChallengerBlocked,
+          isOpponentBlocked: isOpponentBlocked,
+        );
+
+        // 애니메이션을 위한 딜레이
+        await Future<void>.delayed(const Duration(milliseconds: 100));
+      }
+
+      // 무한 루프 방지
+      if (turns > 1000) break;
+    }
+  }
+
+  // ============================================================================
+  // 장비 교환
+  // ============================================================================
+
+  /// 장비 교환 (같은 슬롯끼리)
+  ///
+  /// 승자가 선택한 슬롯의 장비를 서로 교환
+  (HallOfFameEntry, HallOfFameEntry) _exchangeEquipment({
+    required ArenaMatch match,
+    required bool isVictory,
+  }) {
+    final slot = match.bettingSlot;
+
+    // 도전자 장비 목록 복사
+    final challengerEquipment =
+        List<EquipmentItem>.from(match.challenger.finalEquipment ?? []);
+
+    // 상대 장비 목록 복사
+    final opponentEquipment =
+        List<EquipmentItem>.from(match.opponent.finalEquipment ?? []);
+
+    // 해당 슬롯의 장비 찾기
+    final challengerItem = _findItemBySlot(challengerEquipment, slot);
+    final opponentItem = _findItemBySlot(opponentEquipment, slot);
+
+    // 장비 교환
+    _replaceItemInList(challengerEquipment, slot, opponentItem);
+    _replaceItemInList(opponentEquipment, slot, challengerItem);
+
+    // 업데이트된 엔트리 생성
+    final updatedChallenger = match.challenger.copyWith(
+      finalEquipment: challengerEquipment,
+    );
+    final updatedOpponent = match.opponent.copyWith(
+      finalEquipment: opponentEquipment,
+    );
+
+    return (updatedChallenger, updatedOpponent);
+  }
+
+  /// 슬롯으로 장비 찾기
+  EquipmentItem _findItemBySlot(
+      List<EquipmentItem> equipment, EquipmentSlot slot) {
+    for (final item in equipment) {
+      if (item.slot == slot) return item;
+    }
+    return EquipmentItem.empty(slot);
+  }
+
+  /// 장비 목록에서 특정 슬롯의 아이템 교체
+  void _replaceItemInList(
+    List<EquipmentItem> equipment,
+    EquipmentSlot slot,
+    EquipmentItem newItem,
+  ) {
+    for (var i = 0; i < equipment.length; i++) {
+      if (equipment[i].slot == slot) {
+        equipment[i] = newItem;
+        return;
+      }
+    }
+    // 슬롯이 없으면 추가
+    equipment.add(newItem);
+  }
+}

lib/src/core/model/arena_match.dart

@@ -0,0 +1,111 @@
+import 'package:asciineverdie/src/core/model/equipment_slot.dart';
+import 'package:asciineverdie/src/core/model/hall_of_fame.dart';
+
+/// 아레나 대전 정보
+///
+/// 도전자와 상대의 정보, 베팅 슬롯을 포함
+class ArenaMatch {
+  const ArenaMatch({
+    required this.challenger,
+    required this.opponent,
+    required this.bettingSlot,
+  });
+
+  /// 도전자 (내 캐릭터)
+  final HallOfFameEntry challenger;
+
+  /// 상대 캐릭터
+  final HallOfFameEntry opponent;
+
+  /// 베팅 슬롯 (같은 슬롯 교환)
+  final EquipmentSlot bettingSlot;
+
+  /// 도전자 순위
+  int get challengerRank => 0; // ArenaService에서 계산
+
+  /// 상대 순위
+  int get opponentRank => 0; // ArenaService에서 계산
+}
+
+/// 아레나 대전 결과
+class ArenaMatchResult {
+  const ArenaMatchResult({
+    required this.match,
+    required this.isVictory,
+    required this.turns,
+    required this.updatedChallenger,
+    required this.updatedOpponent,
+  });
+
+  /// 대전 정보
+  final ArenaMatch match;
+
+  /// 도전자 승리 여부
+  final bool isVictory;
+
+  /// 전투 턴 수
+  final int turns;
+
+  /// 장비 교환 후 업데이트된 도전자
+  final HallOfFameEntry updatedChallenger;
+
+  /// 장비 교환 후 업데이트된 상대
+  final HallOfFameEntry updatedOpponent;
+}
+
+/// 아레나 전투 턴 (애니메이션용)
+class ArenaCombatTurn {
+  ArenaCombatTurn({
+    this.challengerDamage,
+    this.opponentDamage,
+    required this.challengerHp,
+    required this.opponentHp,
+    required this.challengerHpMax,
+    required this.opponentHpMax,
+    this.isChallengerCritical = false,
+    this.isOpponentCritical = false,
+    this.isChallengerEvaded = false,
+    this.isOpponentEvaded = false,
+    this.isChallengerBlocked = false,
+    this.isOpponentBlocked = false,
+  }) : timestamp = DateTime.now().microsecondsSinceEpoch;
+
+  /// 턴 식별용 타임스탬프
+  final int timestamp;
+
+  /// 도전자가 입힌 데미지 (null이면 공격 안 함)
+  final int? challengerDamage;
+
+  /// 상대가 입힌 데미지 (null이면 공격 안 함)
+  final int? opponentDamage;
+
+  /// 도전자 현재 HP
+  final int challengerHp;
+
+  /// 상대 현재 HP
+  final int opponentHp;
+
+  /// 도전자 최대 HP
+  final int challengerHpMax;
+
+  /// 상대 최대 HP
+  final int opponentHpMax;
+
+  /// 도전자 크리티컬 여부
+  final bool isChallengerCritical;
+
+  /// 상대 크리티컬 여부
+  final bool isOpponentCritical;
+
+  /// 도전자 회피 여부
+  final bool isChallengerEvaded;
+
+  /// 상대 회피 여부
+  final bool isOpponentEvaded;
+
+  /// 도전자 블록 여부
+  final bool isChallengerBlocked;
+
+  /// 상대 블록 여부
+  final bool isOpponentBlocked;
+}

lib/src/core/model/hall_of_fame.dart

@@ -1,5 +1,7 @@
+import 'package:asciineverdie/src/core/engine/item_service.dart';
 import 'package:asciineverdie/src/core/model/combat_stats.dart';
 import 'package:asciineverdie/src/core/model/equipment_item.dart';
+import 'package:asciineverdie/src/core/model/equipment_slot.dart';
 import 'package:asciineverdie/src/core/model/game_state.dart';
 
 /// 명예의 전당 엔트리 (Phase 10: Hall of Fame Entry)
@@ -80,6 +82,39 @@ class HallOfFameEntry {
         '${clearedAt.day.toString().padLeft(2, '0')}';
   }
 
+  /// copyWith 메서드 (아레나 장비 교환용)
+  HallOfFameEntry copyWith({
+    String? id,
+    String? characterName,
+    String? race,
+    String? klass,
+    int? level,
+    int? totalPlayTimeMs,
+    int? totalDeaths,
+    int? monstersKilled,
+    int? questsCompleted,
+    DateTime? clearedAt,
+    CombatStats? finalStats,
+    List<EquipmentItem>? finalEquipment,
+    List<Map<String, String>>? finalSpells,
+  }) {
+    return HallOfFameEntry(
+      id: id ?? this.id,
+      characterName: characterName ?? this.characterName,
+      race: race ?? this.race,
+      klass: klass ?? this.klass,
+      level: level ?? this.level,
+      totalPlayTimeMs: totalPlayTimeMs ?? this.totalPlayTimeMs,
+      totalDeaths: totalDeaths ?? this.totalDeaths,
+      monstersKilled: monstersKilled ?? this.monstersKilled,
+      questsCompleted: questsCompleted ?? this.questsCompleted,
+      clearedAt: clearedAt ?? this.clearedAt,
+      finalStats: finalStats ?? this.finalStats,
+      finalEquipment: finalEquipment ?? this.finalEquipment,
+      finalSpells: finalSpells ?? this.finalSpells,
+    );
+  }
+
   /// GameState에서 HallOfFameEntry 생성
   factory HallOfFameEntry.fromGameState({
     required GameState state,
@@ -181,6 +216,22 @@ class HallOfFame {
   /// 비어있는지 확인
   bool get isEmpty => entries.isEmpty;
 
+  /// ID로 엔트리 조회
+  HallOfFameEntry? findById(String id) {
+    for (final entry in entries) {
+      if (entry.id == id) return entry;
+    }
+    return null;
+  }
+
+  /// 엔트리 업데이트 (아레나 장비 교환 후)
+  HallOfFame updateEntry(HallOfFameEntry updated) {
+    final newEntries = entries.map((e) {
+      return e.id == updated.id ? updated : e;
+    }).toList();
+    return HallOfFame(entries: newEntries);
+  }
+
   /// JSON으로 직렬화
   Map<String, dynamic> toJson() {
     return {'entries': entries.map((e) => e.toJson()).toList()};
@@ -196,3 +247,70 @@ class HallOfFame {
     );
   }
 }
+
+/// 아레나 순위 관련 extension
+extension HallOfFameArenaX on HallOfFame {
+  /// 아레나 점수 계산
+  ///
+  /// 점수 = (레벨 × 100) + 장비점수 + (전투력 / 10)
+  static int calculateArenaScore(HallOfFameEntry entry) {
+    // 1. 레벨 점수 (주요 지표)
+    final levelScore = entry.level * 100;
+
+    // 2. 장비 점수 (전체 슬롯 합계)
+    final equipScore = entry.finalEquipment?.fold<int>(
+          0,
+          (sum, item) => sum + ItemService.calculateEquipmentScore(item),
+        ) ??
+        0;
+
+    // 3. 전투력 점수 (ATK + DEF + HP/10)
+    final combatScore = entry.finalStats != null
+        ? (entry.finalStats!.atk +
+            entry.finalStats!.def +
+            entry.finalStats!.hpMax ~/ 10)
+        : 0;
+
+    return levelScore + equipScore + (combatScore ~/ 10);
+  }
+
+  /// 아레나 점수 기준 정렬된 엔트리 반환
+  List<HallOfFameEntry> get rankedEntries {
+    final sorted = List<HallOfFameEntry>.from(entries)
+      ..sort((a, b) {
+        final scoreA = calculateArenaScore(a);
+        final scoreB = calculateArenaScore(b);
+        if (scoreA != scoreB) return scoreB.compareTo(scoreA);
+        // 동점일 경우 먼저 클리어한 캐릭터가 상위
+        return a.clearedAt.compareTo(b.clearedAt);
+      });
+    return sorted;
+  }
+
+  /// 특정 캐릭터의 순위 반환 (1-based)
+  int getRank(String characterId) {
+    final ranked = rankedEntries;
+    for (var i = 0; i < ranked.length; i++) {
+      if (ranked[i].id == characterId) return i + 1;
+    }
+    return -1;
+  }
+
+  /// 상대의 베팅 슬롯 결정 (최저 장비 점수 슬롯)
+  static EquipmentSlot findWeakestSlot(HallOfFameEntry entry) {
+    final equipment = entry.finalEquipment ?? [];
+    if (equipment.isEmpty) return EquipmentSlot.weapon;
+
+    EquipmentItem weakest = equipment.first;
+    int lowestScore = ItemService.calculateEquipmentScore(weakest);
+
+    for (final item in equipment) {
+      final score = ItemService.calculateEquipmentScore(item);
+      if (score < lowestScore) {
+        lowestScore = score;
+        weakest = item;
+      }
+    }
+    return weakest.slot;
+  }
+}

lib/src/core/model/monster_combat_stats.dart

@@ -1,3 +1,4 @@
+import 'package:asciineverdie/src/core/model/combat_stats.dart';
 import 'package:asciineverdie/src/core/util/balance_constants.dart';
 
 /// 몬스터 공격 속도 타입
@@ -238,4 +239,25 @@ class MonsterCombatStats {
     attackDelayMs: 1000,
     expReward: 15,
   );
+
+  /// CombatStats에서 MonsterCombatStats 생성 (아레나 PvP용)
+  ///
+  /// 플레이어의 CombatStats를 몬스터 형태로 변환하여
+  /// 기존 CombatCalculator를 재사용할 수 있게 함.
+  factory MonsterCombatStats.fromCombatStats(CombatStats stats, String name) {
+    return MonsterCombatStats(
+      name: name,
+      level: 0, // PvP에서는 레벨 페널티 없음
+      atk: stats.atk,
+      def: stats.def,
+      hpMax: stats.hpMax,
+      hpCurrent: stats.hpMax, // 풀 HP로 시작
+      criRate: stats.criRate,
+      criDamage: stats.criDamage,
+      evasion: stats.evasion,
+      accuracy: stats.accuracy,
+      attackDelayMs: stats.attackDelayMs,
+      expReward: 0, // PvP에서는 경험치 없음
+    );
+  }
 }

lib/src/features/arena/arena_battle_screen.dart

@@ -0,0 +1,518 @@
+import 'dart:async';
+
+import 'package:flutter/material.dart';
+
+import 'package:asciineverdie/src/core/engine/arena_service.dart';
+import 'package:asciineverdie/src/core/model/arena_match.dart';
+import 'package:asciineverdie/src/core/model/game_state.dart';
+import 'package:asciineverdie/src/core/model/hall_of_fame.dart';
+import 'package:asciineverdie/src/features/arena/widgets/arena_result_dialog.dart';
+import 'package:asciineverdie/src/features/game/widgets/ascii_animation_card.dart';
+import 'package:asciineverdie/src/shared/retro_colors.dart';
+
+// 임시 문자열 (추후 l10n으로 이동)
+const _battleTitle = 'ARENA BATTLE';
+const _hpLabel = 'HP';
+const _turnLabel = 'TURN';
+
+/// 아레나 전투 화면
+///
+/// ASCII 애니메이션 기반 턴제 전투 표시
+/// 레트로 RPG 스타일 HP 바 (세그먼트)
+class ArenaBattleScreen extends StatefulWidget {
+  const ArenaBattleScreen({
+    super.key,
+    required this.match,
+    required this.onBattleComplete,
+  });
+
+  /// 대전 정보
+  final ArenaMatch match;
+
+  /// 전투 완료 콜백
+  final void Function(ArenaMatchResult) onBattleComplete;
+
+  @override
+  State<ArenaBattleScreen> createState() => _ArenaBattleScreenState();
+}
+
+class _ArenaBattleScreenState extends State<ArenaBattleScreen>
+    with TickerProviderStateMixin {
+  final ArenaService _arenaService = ArenaService();
+
+  /// 현재 턴
+  int _currentTurn = 0;
+
+  /// 도전자 HP
+  late int _challengerHp;
+  late int _challengerHpMax;
+
+  /// 상대 HP
+  late int _opponentHp;
+  late int _opponentHpMax;
+
+  /// 전투 로그
+  final List<String> _battleLog = [];
+
+  /// 전투 시뮬레이션 스트림 구독
+  StreamSubscription<ArenaCombatTurn>? _combatSubscription;
+
+  /// 최종 결과
+  ArenaMatchResult? _result;
+
+  // HP 변화 애니메이션
+  late AnimationController _challengerFlashController;
+  late AnimationController _opponentFlashController;
+  late Animation<double> _challengerFlashAnimation;
+  late Animation<double> _opponentFlashAnimation;
+
+  // 변화량 표시용
+  int _challengerHpChange = 0;
+  int _opponentHpChange = 0;
+
+  @override
+  void initState() {
+    super.initState();
+
+    // HP 초기화
+    _challengerHpMax = widget.match.challenger.finalStats?.hpMax ?? 100;
+    _challengerHp = _challengerHpMax;
+    _opponentHpMax = widget.match.opponent.finalStats?.hpMax ?? 100;
+    _opponentHp = _opponentHpMax;
+
+    // 플래시 애니메이션 초기화
+    _challengerFlashController = AnimationController(
+      duration: const Duration(milliseconds: 400),
+      vsync: this,
+    );
+    _challengerFlashAnimation = Tween<double>(begin: 1.0, end: 0.0).animate(
+      CurvedAnimation(parent: _challengerFlashController, curve: Curves.easeOut),
+    );
+
+    _opponentFlashController = AnimationController(
+      duration: const Duration(milliseconds: 400),
+      vsync: this,
+    );
+    _opponentFlashAnimation = Tween<double>(begin: 1.0, end: 0.0).animate(
+      CurvedAnimation(parent: _opponentFlashController, curve: Curves.easeOut),
+    );
+
+    // 전투 시작 (딜레이 후)
+    Future.delayed(const Duration(milliseconds: 500), _startBattle);
+  }
+
+  @override
+  void dispose() {
+    _combatSubscription?.cancel();
+    _challengerFlashController.dispose();
+    _opponentFlashController.dispose();
+    super.dispose();
+  }
+
+  void _startBattle() {
+    _combatSubscription = _arenaService.simulateCombat(widget.match).listen(
+      (turn) {
+        _processTurn(turn);
+      },
+      onDone: () {
+        _endBattle();
+      },
+    );
+  }
+
+  void _processTurn(ArenaCombatTurn turn) {
+    final oldChallengerHp = _challengerHp;
+    final oldOpponentHp = _opponentHp;
+
+    setState(() {
+      _currentTurn++;
+      _challengerHp = turn.challengerHp;
+      _opponentHp = turn.opponentHp;
+
+      // 도전자 HP 변화 감지
+      if (oldChallengerHp != _challengerHp) {
+        _challengerHpChange = _challengerHp - oldChallengerHp;
+        _challengerFlashController.forward(from: 0.0);
+      }
+
+      // 상대 HP 변화 감지
+      if (oldOpponentHp != _opponentHp) {
+        _opponentHpChange = _opponentHp - oldOpponentHp;
+        _opponentFlashController.forward(from: 0.0);
+      }
+
+      // 로그 추가
+      if (turn.challengerDamage != null) {
+        final critText = turn.isChallengerCritical ? ' CRITICAL!' : '';
+        final evadeText = turn.isOpponentEvaded ? ' (Evaded)' : '';
+        final blockText = turn.isOpponentBlocked ? ' (Blocked)' : '';
+        _battleLog.add(
+          '${widget.match.challenger.characterName} deals '
+          '${turn.challengerDamage}$critText$evadeText$blockText',
+        );
+      }
+
+      if (turn.opponentDamage != null) {
+        final critText = turn.isOpponentCritical ? ' CRITICAL!' : '';
+        final evadeText = turn.isChallengerEvaded ? ' (Evaded)' : '';
+        final blockText = turn.isChallengerBlocked ? ' (Blocked)' : '';
+        _battleLog.add(
+          '${widget.match.opponent.characterName} deals '
+          '${turn.opponentDamage}$critText$evadeText$blockText',
+        );
+      }
+    });
+  }
+
+  void _endBattle() {
+    // 최종 결과 계산
+    _result = _arenaService.executeCombat(widget.match);
+
+    // 결과 다이얼로그 표시
+    Future.delayed(const Duration(milliseconds: 500), () {
+      if (mounted && _result != null) {
+        showArenaResultDialog(
+          context,
+          result: _result!,
+          onClose: () {
+            widget.onBattleComplete(_result!);
+          },
+        );
+      }
+    });
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return Scaffold(
+      backgroundColor: RetroColors.backgroundOf(context),
+      appBar: AppBar(
+        title: Text(
+          _battleTitle,
+          style: const TextStyle(
+            fontFamily: 'PressStart2P',
+            fontSize: 12,
+          ),
+        ),
+        centerTitle: true,
+        backgroundColor: RetroColors.panelBgOf(context),
+        automaticallyImplyLeading: false,
+      ),
+      body: SafeArea(
+        child: Column(
+          children: [
+            // 턴 표시
+            _buildTurnIndicator(),
+            // HP 바 (레트로 세그먼트 스타일)
+            _buildRetroHpBars(),
+            // ASCII 애니메이션 (중앙) - 기존 AsciiAnimationCard 재사용
+            Padding(
+              padding: const EdgeInsets.symmetric(horizontal: 8),
+              child: SizedBox(
+                height: 120,
+                child: AsciiAnimationCard(
+                  taskType: TaskType.kill,
+                  raceId: widget.match.challenger.race,
+                  shieldName: _hasShield(widget.match.challenger) ? 'shield' : null,
+                  opponentRaceId: widget.match.opponent.race,
+                  opponentHasShield: _hasShield(widget.match.opponent),
+                ),
+              ),
+            ),
+            // 로그 영역 (남은 공간 채움)
+            Expanded(child: _buildBattleLog()),
+          ],
+        ),
+      ),
+    );
+  }
+
+  /// 방패 장착 여부 확인
+  bool _hasShield(HallOfFameEntry entry) {
+    final equipment = entry.finalEquipment;
+    if (equipment == null) return false;
+    return equipment.any((item) => item.slot.name == 'shield');
+  }
+
+  Widget _buildTurnIndicator() {
+    return Container(
+      padding: const EdgeInsets.symmetric(vertical: 8),
+      color: RetroColors.panelBgOf(context).withValues(alpha: 0.5),
+      child: Row(
+        mainAxisAlignment: MainAxisAlignment.center,
+        children: [
+          Icon(
+            Icons.sports_kabaddi,
+            color: RetroColors.goldOf(context),
+            size: 16,
+          ),
+          const SizedBox(width: 8),
+          Text(
+            '$_turnLabel $_currentTurn',
+            style: TextStyle(
+              fontFamily: 'PressStart2P',
+              fontSize: 10,
+              color: RetroColors.goldOf(context),
+            ),
+          ),
+        ],
+      ),
+    );
+  }
+
+  /// 레트로 스타일 HP 바 (좌우 대칭)
+  Widget _buildRetroHpBars() {
+    return Container(
+      padding: const EdgeInsets.symmetric(horizontal: 8, vertical: 6),
+      decoration: BoxDecoration(
+        color: RetroColors.panelBgOf(context),
+        border: Border(
+          bottom: BorderSide(
+            color: RetroColors.borderOf(context),
+            width: 2,
+          ),
+        ),
+      ),
+      child: Row(
+        children: [
+          // 도전자 HP (좌측, 파란색)
+          Expanded(
+            child: _buildRetroHpBar(
+              name: widget.match.challenger.characterName,
+              hp: _challengerHp,
+              hpMax: _challengerHpMax,
+              fillColor: RetroColors.mpBlue,
+              accentColor: Colors.blue,
+              flashAnimation: _challengerFlashAnimation,
+              hpChange: _challengerHpChange,
+              isReversed: false,
+            ),
+          ),
+          // VS 구분자
+          Padding(
+            padding: const EdgeInsets.symmetric(horizontal: 8),
+            child: Text(
+              'VS',
+              style: TextStyle(
+                fontFamily: 'PressStart2P',
+                fontSize: 8,
+                color: RetroColors.goldOf(context),
+                fontWeight: FontWeight.bold,
+              ),
+            ),
+          ),
+          // 상대 HP (우측, 빨간색)
+          Expanded(
+            child: _buildRetroHpBar(
+              name: widget.match.opponent.characterName,
+              hp: _opponentHp,
+              hpMax: _opponentHpMax,
+              fillColor: RetroColors.hpRed,
+              accentColor: Colors.red,
+              flashAnimation: _opponentFlashAnimation,
+              hpChange: _opponentHpChange,
+              isReversed: true,
+            ),
+          ),
+        ],
+      ),
+    );
+  }
+
+  /// 레트로 세그먼트 HP 바
+  Widget _buildRetroHpBar({
+    required String name,
+    required int hp,
+    required int hpMax,
+    required Color fillColor,
+    required Color accentColor,
+    required Animation<double> flashAnimation,
+    required int hpChange,
+    required bool isReversed,
+  }) {
+    final hpRatio = hpMax > 0 ? hp / hpMax : 0.0;
+    final isLow = hpRatio < 0.2 && hpRatio > 0;
+
+    return AnimatedBuilder(
+      animation: flashAnimation,
+      builder: (context, child) {
+        // 플래시 색상 (데미지=빨강)
+        final isDamage = hpChange < 0;
+        final flashColor = isDamage
+            ? RetroColors.hpRed.withValues(alpha: flashAnimation.value * 0.4)
+            : RetroColors.expGreen.withValues(alpha: flashAnimation.value * 0.4);
+
+        return Container(
+          padding: const EdgeInsets.all(6),
+          decoration: BoxDecoration(
+            color: flashAnimation.value > 0.1
+                ? flashColor
+                : accentColor.withValues(alpha: 0.1),
+            borderRadius: BorderRadius.circular(4),
+            border: Border.all(color: accentColor, width: 2),
+          ),
+          child: Stack(
+            clipBehavior: Clip.none,
+            children: [
+              Column(
+                crossAxisAlignment:
+                    isReversed ? CrossAxisAlignment.end : CrossAxisAlignment.start,
+                children: [
+                  // 이름
+                  Text(
+                    name,
+                    style: TextStyle(
+                      fontFamily: 'PressStart2P',
+                      fontSize: 6,
+                      color: RetroColors.textPrimaryOf(context),
+                    ),
+                    maxLines: 1,
+                    overflow: TextOverflow.ellipsis,
+                  ),
+                  const SizedBox(height: 4),
+                  // HP 세그먼트 바
+                  _buildSegmentBar(
+                    ratio: hpRatio,
+                    fillColor: fillColor,
+                    isLow: isLow,
+                    isReversed: isReversed,
+                  ),
+                  const SizedBox(height: 2),
+                  // HP 수치
+                  Row(
+                    mainAxisAlignment:
+                        isReversed ? MainAxisAlignment.end : MainAxisAlignment.start,
+                    children: [
+                      Text(
+                        _hpLabel,
+                        style: TextStyle(
+                          fontFamily: 'PressStart2P',
+                          fontSize: 5,
+                          color: accentColor.withValues(alpha: 0.8),
+                        ),
+                      ),
+                      const SizedBox(width: 4),
+                      Text(
+                        '$hp/$hpMax',
+                        style: TextStyle(
+                          fontFamily: 'PressStart2P',
+                          fontSize: 6,
+                          color: isLow ? RetroColors.hpRed : fillColor,
+                        ),
+                      ),
+                    ],
+                  ),
+                ],
+              ),
+
+              // 플로팅 데미지 텍스트
+              if (hpChange != 0 && flashAnimation.value > 0.05)
+                Positioned(
+                  left: isReversed ? null : 0,
+                  right: isReversed ? 0 : null,
+                  top: -12,
+                  child: Transform.translate(
+                    offset: Offset(0, -12 * (1 - flashAnimation.value)),
+                    child: Opacity(
+                      opacity: flashAnimation.value,
+                      child: Text(
+                        hpChange > 0 ? '+$hpChange' : '$hpChange',
+                        style: TextStyle(
+                          fontFamily: 'PressStart2P',
+                          fontSize: 8,
+                          fontWeight: FontWeight.bold,
+                          color: isDamage ? RetroColors.hpRed : RetroColors.expGreen,
+                          shadows: const [
+                            Shadow(color: Colors.black, blurRadius: 3),
+                            Shadow(color: Colors.black, blurRadius: 6),
+                          ],
+                        ),
+                      ),
+                    ),
+                  ),
+                ),
+            ],
+          ),
+        );
+      },
+    );
+  }
+
+  /// 세그먼트 바 (8-bit 스타일)
+  Widget _buildSegmentBar({
+    required double ratio,
+    required Color fillColor,
+    required bool isLow,
+    required bool isReversed,
+  }) {
+    const segmentCount = 10;
+    final filledSegments = (ratio.clamp(0.0, 1.0) * segmentCount).round();
+
+    final segments = List.generate(segmentCount, (index) {
+      final isFilled = isReversed
+          ? index >= segmentCount - filledSegments
+          : index < filledSegments;
+
+      return Expanded(
+        child: Container(
+          height: 8,
+          decoration: BoxDecoration(
+            color: isFilled
+                ? (isLow ? RetroColors.hpRed : fillColor)
+                : fillColor.withValues(alpha: 0.2),
+            border: Border(
+              right: index < segmentCount - 1
+                  ? BorderSide(
+                      color: RetroColors.borderOf(context).withValues(alpha: 0.3),
+                      width: 1,
+                    )
+                  : BorderSide.none,
+            ),
+          ),
+        ),
+      );
+    });
+
+    return Container(
+      decoration: BoxDecoration(
+        border: Border.all(
+          color: RetroColors.borderOf(context),
+          width: 1,
+        ),
+      ),
+      child: Row(
+        children: isReversed ? segments.reversed.toList() : segments,
+      ),
+    );
+  }
+
+  Widget _buildBattleLog() {
+    return Container(
+      margin: const EdgeInsets.all(12),
+      padding: const EdgeInsets.all(8),
+      decoration: BoxDecoration(
+        color: RetroColors.panelBgOf(context),
+        borderRadius: BorderRadius.circular(8),
+        border: Border.all(color: RetroColors.borderOf(context)),
+      ),
+      child: ListView.builder(
+        reverse: true,
+        itemCount: _battleLog.length,
+        itemBuilder: (context, index) {
+          final reversedIndex = _battleLog.length - 1 - index;
+          return Padding(
+            padding: const EdgeInsets.symmetric(vertical: 2),
+            child: Text(
+              _battleLog[reversedIndex],
+              style: TextStyle(
+                fontFamily: 'JetBrainsMono',
+                fontSize: 7,
+                color: RetroColors.textSecondaryOf(context),
+              ),
+            ),
+          );
+        },
+      ),
+    );
+  }
+}

lib/src/features/arena/arena_screen.dart

@@ -0,0 +1,168 @@
+import 'package:flutter/material.dart';
+
+import 'package:asciineverdie/src/core/model/hall_of_fame.dart';
+import 'package:asciineverdie/src/core/storage/hall_of_fame_storage.dart';
+import 'package:asciineverdie/src/features/arena/arena_setup_screen.dart';
+import 'package:asciineverdie/src/features/arena/widgets/arena_rank_card.dart';
+import 'package:asciineverdie/src/shared/retro_colors.dart';
+import 'package:asciineverdie/src/shared/widgets/retro_panel.dart';
+
+// 임시 문자열 (추후 l10n으로 이동)
+const _arenaTitle = 'LOCAL ARENA';
+const _arenaSubtitle = 'SELECT YOUR FIGHTER';
+const _arenaEmpty = 'Not enough heroes';
+const _arenaEmptyHint = 'Clear the game with 2+ characters';
+
+/// 로컬 아레나 메인 화면
+///
+/// 순위표 표시 및 도전하기 버튼
+class ArenaScreen extends StatefulWidget {
+  const ArenaScreen({super.key});
+
+  @override
+  State<ArenaScreen> createState() => _ArenaScreenState();
+}
+
+class _ArenaScreenState extends State<ArenaScreen> {
+  final HallOfFameStorage _storage = HallOfFameStorage();
+  HallOfFame? _hallOfFame;
+  bool _isLoading = true;
+
+  @override
+  void initState() {
+    super.initState();
+    _loadHallOfFame();
+  }
+
+  Future<void> _loadHallOfFame() async {
+    final hallOfFame = await _storage.load();
+
+    if (mounted) {
+      setState(() {
+        _hallOfFame = hallOfFame;
+        _isLoading = false;
+      });
+    }
+  }
+
+  /// 캐릭터 선택 시 바로 슬롯 선택 화면으로 이동
+  void _selectChallenger(HallOfFameEntry challenger) {
+    if (_hallOfFame == null || _hallOfFame!.count < 2) return;
+
+    Navigator.of(context).push(
+      MaterialPageRoute<void>(
+        builder: (context) => ArenaSetupScreen(
+          hallOfFame: _hallOfFame!,
+          initialChallenger: challenger,
+          onBattleComplete: _onBattleComplete,
+        ),
+      ),
+    );
+  }
+
+  void _onBattleComplete(HallOfFame updatedHallOfFame) {
+    setState(() {
+      _hallOfFame = updatedHallOfFame;
+    });
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return Scaffold(
+      backgroundColor: RetroColors.backgroundOf(context),
+      appBar: AppBar(
+        title: Text(
+          _arenaTitle,
+          style: const TextStyle(
+            fontFamily: 'PressStart2P',
+            fontSize: 12,
+          ),
+        ),
+        centerTitle: true,
+        backgroundColor: RetroColors.panelBgOf(context),
+      ),
+      body: SafeArea(
+        child: _isLoading
+            ? const Center(child: CircularProgressIndicator())
+            : _buildContent(),
+      ),
+    );
+  }
+
+  Widget _buildContent() {
+    final hallOfFame = _hallOfFame;
+    if (hallOfFame == null || hallOfFame.count < 2) {
+      return _buildEmptyState();
+    }
+
+    return Column(
+      children: [
+        // 순위표 (캐릭터 선택)
+        Expanded(child: _buildRankingList(hallOfFame)),
+      ],
+    );
+  }
+
+  Widget _buildEmptyState() {
+    return Center(
+      child: RetroPanel(
+        padding: const EdgeInsets.all(24),
+        child: Column(
+          mainAxisSize: MainAxisSize.min,
+          children: [
+            Icon(
+              Icons.sports_kabaddi,
+              size: 64,
+              color: RetroColors.textMutedOf(context),
+            ),
+            const SizedBox(height: 16),
+            Text(
+              _arenaEmpty,
+              style: TextStyle(
+                fontFamily: 'PressStart2P',
+                fontSize: 10,
+                color: RetroColors.textSecondaryOf(context),
+              ),
+            ),
+            const SizedBox(height: 8),
+            Text(
+              _arenaEmptyHint,
+              style: TextStyle(
+                fontFamily: 'PressStart2P',
+                fontSize: 7,
+                color: RetroColors.textMutedOf(context),
+              ),
+              textAlign: TextAlign.center,
+            ),
+          ],
+        ),
+      ),
+    );
+  }
+
+  Widget _buildRankingList(HallOfFame hallOfFame) {
+    final rankedEntries = hallOfFame.rankedEntries;
+
+    return Padding(
+      padding: const EdgeInsets.all(12),
+      child: RetroGoldPanel(
+        title: _arenaSubtitle,
+        padding: const EdgeInsets.all(8),
+        child: ListView.builder(
+          itemCount: rankedEntries.length,
+          itemBuilder: (context, index) {
+            final entry = rankedEntries[index];
+            final score = HallOfFameArenaX.calculateArenaScore(entry);
+            return ArenaRankCard(
+              entry: entry,
+              rank: index + 1,
+              score: score,
+              onTap: () => _selectChallenger(entry),
+            );
+          },
+        ),
+      ),
+    );
+  }
+
+}

lib/src/features/arena/arena_setup_screen.dart

@@ -0,0 +1,447 @@
+import 'package:flutter/material.dart';
+
+import 'package:asciineverdie/src/core/engine/arena_service.dart';
+import 'package:asciineverdie/src/core/engine/item_service.dart';
+import 'package:asciineverdie/src/core/model/arena_match.dart';
+import 'package:asciineverdie/src/core/model/equipment_item.dart';
+import 'package:asciineverdie/src/core/model/equipment_slot.dart';
+import 'package:asciineverdie/src/core/model/hall_of_fame.dart';
+import 'package:asciineverdie/src/core/storage/hall_of_fame_storage.dart';
+import 'package:asciineverdie/src/features/arena/arena_battle_screen.dart';
+import 'package:asciineverdie/src/features/arena/widgets/arena_equipment_compare_list.dart';
+import 'package:asciineverdie/src/features/arena/widgets/arena_idle_preview.dart';
+import 'package:asciineverdie/src/features/arena/widgets/arena_rank_card.dart';
+import 'package:asciineverdie/src/shared/retro_colors.dart';
+
+// 임시 문자열 (추후 l10n으로 이동)
+const _setupTitle = 'ARENA SETUP';
+const _selectCharacter = 'SELECT YOUR FIGHTER';
+const _startBattleLabel = 'START BATTLE';
+
+/// 아레나 설정 화면
+///
+/// 캐릭터 선택 및 슬롯 선택
+class ArenaSetupScreen extends StatefulWidget {
+  const ArenaSetupScreen({
+    super.key,
+    required this.hallOfFame,
+    required this.onBattleComplete,
+    this.initialChallenger,
+  });
+
+  /// 명예의 전당
+  final HallOfFame hallOfFame;
+
+  /// 전투 완료 콜백 (업데이트된 명예의 전당 전달)
+  final void Function(HallOfFame) onBattleComplete;
+
+  /// 초기 도전자 (메인 화면에서 선택한 경우)
+  final HallOfFameEntry? initialChallenger;
+
+  @override
+  State<ArenaSetupScreen> createState() => _ArenaSetupScreenState();
+}
+
+class _ArenaSetupScreenState extends State<ArenaSetupScreen> {
+  final ArenaService _arenaService = ArenaService();
+  final HallOfFameStorage _storage = HallOfFameStorage();
+
+  /// 현재 단계 (0: 캐릭터 선택, 1: 슬롯 선택)
+  int _step = 0;
+
+  /// 선택된 도전자
+  HallOfFameEntry? _challenger;
+
+  /// 자동 결정된 상대
+  HallOfFameEntry? _opponent;
+
+  /// 선택된 베팅 슬롯
+  EquipmentSlot? _selectedSlot;
+
+  @override
+  void initState() {
+    super.initState();
+
+    // 초기 도전자가 있으면 바로 슬롯 선택 단계로 이동
+    if (widget.initialChallenger != null) {
+      _selectChallenger(widget.initialChallenger!);
+    }
+  }
+
+  void _selectChallenger(HallOfFameEntry entry) {
+    final opponent = _arenaService.findOpponent(widget.hallOfFame, entry.id);
+
+    setState(() {
+      _challenger = entry;
+      _opponent = opponent;
+      _step = 1;
+    });
+  }
+
+  void _startBattle() {
+    if (_challenger == null ||
+        _opponent == null ||
+        _selectedSlot == null) {
+      return;
+    }
+
+    final match = ArenaMatch(
+      challenger: _challenger!,
+      opponent: _opponent!,
+      bettingSlot: _selectedSlot!,
+    );
+
+    final navigator = Navigator.of(context);
+
+    navigator.push(
+      MaterialPageRoute<void>(
+        builder: (ctx) => ArenaBattleScreen(
+          match: match,
+          onBattleComplete: (result) async {
+            // 결과 저장
+            var updatedHallOfFame = widget.hallOfFame
+                .updateEntry(result.updatedChallenger)
+                .updateEntry(result.updatedOpponent);
+
+            await _storage.save(updatedHallOfFame);
+
+            widget.onBattleComplete(updatedHallOfFame);
+
+            // 아레나 화면으로 돌아가기
+            if (mounted) {
+              navigator.popUntil((route) => route.isFirst);
+            }
+          },
+        ),
+      ),
+    );
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return Scaffold(
+      backgroundColor: RetroColors.backgroundOf(context),
+      appBar: AppBar(
+        title: Text(
+          _setupTitle,
+          style: const TextStyle(
+            fontFamily: 'PressStart2P',
+            fontSize: 12,
+          ),
+        ),
+        centerTitle: true,
+        backgroundColor: RetroColors.panelBgOf(context),
+      ),
+      body: SafeArea(
+        child: _step == 0 ? _buildCharacterSelection() : _buildSlotSelection(),
+      ),
+    );
+  }
+
+  Widget _buildCharacterSelection() {
+    final rankedEntries = widget.hallOfFame.rankedEntries;
+
+    return Column(
+      children: [
+        // 헤더
+        Padding(
+          padding: const EdgeInsets.all(16),
+          child: Text(
+            _selectCharacter,
+            style: TextStyle(
+              fontFamily: 'PressStart2P',
+              fontSize: 10,
+              color: RetroColors.goldOf(context),
+            ),
+          ),
+        ),
+        // 캐릭터 목록
+        Expanded(
+          child: ListView.builder(
+            padding: const EdgeInsets.symmetric(horizontal: 8),
+            itemCount: rankedEntries.length,
+            itemBuilder: (context, index) {
+              final entry = rankedEntries[index];
+              final score = HallOfFameArenaX.calculateArenaScore(entry);
+              return ArenaRankCard(
+                entry: entry,
+                rank: index + 1,
+                score: score,
+                onTap: () => _selectChallenger(entry),
+              );
+            },
+          ),
+        ),
+      ],
+    );
+  }
+
+  Widget _buildSlotSelection() {
+    final recommendedSlot = _calculateRecommendedSlot();
+
+    return Column(
+      children: [
+        // ASCII 캐릭터 미리보기 (좌: 도전자, 우: 상대 반전)
+        ArenaIdlePreview(
+          challengerRaceId: _challenger?.race,
+          opponentRaceId: _opponent?.race,
+        ),
+        // 상단 캐릭터 정보 (좌우 대칭)
+        _buildCharacterHeaders(),
+        // 장비 비교 리스트
+        Expanded(
+          child: Padding(
+            padding: const EdgeInsets.symmetric(horizontal: 12),
+            child: ArenaEquipmentCompareList(
+              myEquipment: _challenger?.finalEquipment,
+              enemyEquipment: _opponent?.finalEquipment,
+              selectedSlot: _selectedSlot,
+              recommendedSlot: recommendedSlot,
+              onSlotSelected: (slot) {
+                setState(() => _selectedSlot = slot);
+              },
+            ),
+          ),
+        ),
+        // 하단 버튼
+        _buildStartButton(),
+      ],
+    );
+  }
+
+  /// 추천 슬롯 계산 (점수 이득이 가장 큰 슬롯)
+  EquipmentSlot? _calculateRecommendedSlot() {
+    if (_challenger == null || _opponent == null) return null;
+
+    EquipmentSlot? bestSlot;
+    int maxGain = 0;
+
+    for (final slot in EquipmentSlot.values) {
+      final myItem = _findItem(slot, _challenger!.finalEquipment);
+      final enemyItem = _findItem(slot, _opponent!.finalEquipment);
+
+      final myScore =
+          myItem != null ? ItemService.calculateEquipmentScore(myItem) : 0;
+      final enemyScore =
+          enemyItem != null ? ItemService.calculateEquipmentScore(enemyItem) : 0;
+      final gain = enemyScore - myScore;
+
+      if (gain > maxGain) {
+        maxGain = gain;
+        bestSlot = slot;
+      }
+    }
+
+    return bestSlot;
+  }
+
+  /// 장비 찾기 헬퍼
+  EquipmentItem? _findItem(EquipmentSlot slot, List<EquipmentItem>? items) {
+    if (items == null) return null;
+    for (final item in items) {
+      if (item.slot == slot) return item;
+    }
+    return null;
+  }
+
+  /// 상단 캐릭터 정보 헤더 (좌우 대칭)
+  Widget _buildCharacterHeaders() {
+    return Padding(
+      padding: const EdgeInsets.all(12),
+      child: Row(
+        crossAxisAlignment: CrossAxisAlignment.start,
+        children: [
+          // 내 캐릭터
+          Expanded(child: _buildChallengerInfo()),
+          const SizedBox(width: 12),
+          // 상대 캐릭터
+          Expanded(child: _buildOpponentInfo()),
+        ],
+      ),
+    );
+  }
+
+  /// 내 캐릭터 정보 카드
+  Widget _buildChallengerInfo() {
+    if (_challenger == null) return const SizedBox.shrink();
+
+    final score = HallOfFameArenaX.calculateArenaScore(_challenger!);
+    final rank = widget.hallOfFame.getRank(_challenger!.id);
+
+    return Container(
+      padding: const EdgeInsets.all(10),
+      decoration: BoxDecoration(
+        color: Colors.blue.withValues(alpha: 0.1),
+        borderRadius: BorderRadius.circular(8),
+        border: Border.all(color: Colors.blue, width: 2),
+      ),
+      child: Row(
+        children: [
+          // 순위 배지
+          Container(
+            width: 32,
+            height: 32,
+            decoration: BoxDecoration(
+              color: Colors.blue.withValues(alpha: 0.2),
+              shape: BoxShape.circle,
+              border: Border.all(color: Colors.blue, width: 2),
+            ),
+            child: Center(
+              child: Text(
+                '$rank',
+                style: const TextStyle(
+                  fontFamily: 'PressStart2P',
+                  fontSize: 10,
+                  color: Colors.blue,
+                  fontWeight: FontWeight.bold,
+                ),
+              ),
+            ),
+          ),
+          const SizedBox(width: 8),
+          // 정보
+          Expanded(
+            child: Column(
+              crossAxisAlignment: CrossAxisAlignment.start,
+              children: [
+                Text(
+                  _challenger!.characterName,
+                  style: TextStyle(
+                    fontFamily: 'PressStart2P',
+                    fontSize: 7,
+                    color: RetroColors.textPrimaryOf(context),
+                  ),
+                  maxLines: 1,
+                  overflow: TextOverflow.ellipsis,
+                ),
+                const SizedBox(height: 2),
+                Text(
+                  'Lv.${_challenger!.level} • $score pt',
+                  style: TextStyle(
+                    fontFamily: 'PressStart2P',
+                    fontSize: 5,
+                    color: RetroColors.textSecondaryOf(context),
+                  ),
+                ),
+              ],
+            ),
+          ),
+        ],
+      ),
+    );
+  }
+
+  /// 시작 버튼
+  Widget _buildStartButton() {
+    return Padding(
+      padding: const EdgeInsets.all(12),
+      child: SizedBox(
+        height: 48,
+        child: ElevatedButton(
+          onPressed: _selectedSlot != null ? _startBattle : null,
+          style: ElevatedButton.styleFrom(
+            backgroundColor: RetroColors.goldOf(context),
+            foregroundColor: RetroColors.backgroundOf(context),
+            disabledBackgroundColor:
+                RetroColors.borderOf(context).withValues(alpha: 0.5),
+            shape: RoundedRectangleBorder(
+              borderRadius: BorderRadius.circular(8),
+            ),
+          ),
+          child: Row(
+            mainAxisAlignment: MainAxisAlignment.center,
+            children: [
+              Icon(
+                Icons.sports_kabaddi,
+                color: _selectedSlot != null
+                    ? RetroColors.backgroundOf(context)
+                    : RetroColors.textMutedOf(context),
+              ),
+              const SizedBox(width: 8),
+              Text(
+                _startBattleLabel,
+                style: TextStyle(
+                  fontFamily: 'PressStart2P',
+                  fontSize: 10,
+                  color: _selectedSlot != null
+                      ? RetroColors.backgroundOf(context)
+                      : RetroColors.textMutedOf(context),
+                ),
+              ),
+            ],
+          ),
+        ),
+      ),
+    );
+  }
+
+  /// 상대 캐릭터 정보 카드 (대칭 스타일)
+  Widget _buildOpponentInfo() {
+    if (_opponent == null) return const SizedBox.shrink();
+
+    final score = HallOfFameArenaX.calculateArenaScore(_opponent!);
+    final rank = widget.hallOfFame.getRank(_opponent!.id);
+
+    return Container(
+      padding: const EdgeInsets.all(10),
+      decoration: BoxDecoration(
+        color: Colors.red.withValues(alpha: 0.1),
+        borderRadius: BorderRadius.circular(8),
+        border: Border.all(color: Colors.red, width: 2),
+      ),
+      child: Row(
+        children: [
+          // 순위 배지
+          Container(
+            width: 32,
+            height: 32,
+            decoration: BoxDecoration(
+              color: Colors.red.withValues(alpha: 0.2),
+              shape: BoxShape.circle,
+              border: Border.all(color: Colors.red, width: 2),
+            ),
+            child: Center(
+              child: Text(
+                '$rank',
+                style: const TextStyle(
+                  fontFamily: 'PressStart2P',
+                  fontSize: 10,
+                  color: Colors.red,
+                  fontWeight: FontWeight.bold,
+                ),
+              ),
+            ),
+          ),
+          const SizedBox(width: 8),
+          // 정보
+          Expanded(
+            child: Column(
+              crossAxisAlignment: CrossAxisAlignment.start,
+              children: [
+                Text(
+                  _opponent!.characterName,
+                  style: TextStyle(
+                    fontFamily: 'PressStart2P',
+                    fontSize: 7,
+                    color: RetroColors.textPrimaryOf(context),
+                  ),
+                  maxLines: 1,
+                  overflow: TextOverflow.ellipsis,
+                ),
+                const SizedBox(height: 2),
+                Text(
+                  'Lv.${_opponent!.level} • $score pt',
+                  style: TextStyle(
+                    fontFamily: 'PressStart2P',
+                    fontSize: 5,
+                    color: RetroColors.textSecondaryOf(context),
+                  ),
+                ),
+              ],
+            ),
+          ),
+        ],
+      ),
+    );
+  }
+}

lib/src/features/arena/widgets/arena_equipment_compare_list.dart

@@ -0,0 +1,548 @@
+import 'package:flutter/material.dart';
+
+import 'package:asciineverdie/src/core/engine/item_service.dart';
+import 'package:asciineverdie/src/core/model/equipment_item.dart';
+import 'package:asciineverdie/src/core/model/equipment_slot.dart';
+import 'package:asciineverdie/src/core/model/item_stats.dart';
+import 'package:asciineverdie/src/shared/retro_colors.dart';
+
+// 임시 문자열 (추후 l10n으로 이동)
+const _myEquipmentTitle = 'MY EQUIPMENT';
+const _enemyEquipmentTitle = 'ENEMY EQUIPMENT';
+const _selectSlotLabel = 'SELECT';
+const _recommendedLabel = 'BEST';
+
+/// 좌우 대칭 장비 비교 리스트
+///
+/// 내 장비와 상대 장비를 나란히 표시하고,
+/// 선택 시 인라인으로 비교 정보를 확장
+class ArenaEquipmentCompareList extends StatefulWidget {
+  const ArenaEquipmentCompareList({
+    super.key,
+    required this.myEquipment,
+    required this.enemyEquipment,
+    required this.selectedSlot,
+    required this.onSlotSelected,
+    this.recommendedSlot,
+  });
+
+  /// 내 장비 목록
+  final List<EquipmentItem>? myEquipment;
+
+  /// 상대 장비 목록
+  final List<EquipmentItem>? enemyEquipment;
+
+  /// 현재 선택된 슬롯
+  final EquipmentSlot? selectedSlot;
+
+  /// 슬롯 선택 콜백
+  final ValueChanged<EquipmentSlot> onSlotSelected;
+
+  /// 추천 슬롯 (점수 이득이 가장 큰 슬롯)
+  final EquipmentSlot? recommendedSlot;
+
+  @override
+  State<ArenaEquipmentCompareList> createState() =>
+      _ArenaEquipmentCompareListState();
+}
+
+class _ArenaEquipmentCompareListState extends State<ArenaEquipmentCompareList> {
+  /// 현재 확장된 슬롯 (탭하여 비교 중인 슬롯)
+  EquipmentSlot? _expandedSlot;
+
+  @override
+  Widget build(BuildContext context) {
+    return Column(
+      children: [
+        // 헤더 (좌우 타이틀)
+        _buildHeader(context),
+        const SizedBox(height: 8),
+        // 장비 리스트
+        Expanded(
+          child: ListView.builder(
+            itemCount: EquipmentSlot.values.length,
+            itemBuilder: (context, index) {
+              final slot = EquipmentSlot.values[index];
+              return _buildSlotRow(context, slot);
+            },
+          ),
+        ),
+      ],
+    );
+  }
+
+  Widget _buildHeader(BuildContext context) {
+    return Row(
+      children: [
+        // 내 장비 타이틀
+        Expanded(
+          child: Container(
+            padding: const EdgeInsets.symmetric(vertical: 6, horizontal: 8),
+            decoration: BoxDecoration(
+              color: Colors.blue.withValues(alpha: 0.1),
+              borderRadius: BorderRadius.circular(4),
+              border: Border.all(color: Colors.blue.withValues(alpha: 0.3)),
+            ),
+            child: Text(
+              _myEquipmentTitle,
+              style: const TextStyle(
+                fontFamily: 'PressStart2P',
+                fontSize: 6,
+                color: Colors.blue,
+              ),
+              textAlign: TextAlign.center,
+            ),
+          ),
+        ),
+        const SizedBox(width: 8),
+        // 상대 장비 타이틀
+        Expanded(
+          child: Container(
+            padding: const EdgeInsets.symmetric(vertical: 6, horizontal: 8),
+            decoration: BoxDecoration(
+              color: Colors.red.withValues(alpha: 0.1),
+              borderRadius: BorderRadius.circular(4),
+              border: Border.all(color: Colors.red.withValues(alpha: 0.3)),
+            ),
+            child: Text(
+              _enemyEquipmentTitle,
+              style: const TextStyle(
+                fontFamily: 'PressStart2P',
+                fontSize: 6,
+                color: Colors.red,
+              ),
+              textAlign: TextAlign.center,
+            ),
+          ),
+        ),
+      ],
+    );
+  }
+
+  Widget _buildSlotRow(BuildContext context, EquipmentSlot slot) {
+    final myItem = _findItem(slot, widget.myEquipment);
+    final enemyItem = _findItem(slot, widget.enemyEquipment);
+    final isExpanded = _expandedSlot == slot;
+    final isSelected = widget.selectedSlot == slot;
+    final isRecommended = widget.recommendedSlot == slot;
+
+    final myScore =
+        myItem != null ? ItemService.calculateEquipmentScore(myItem) : 0;
+    final enemyScore =
+        enemyItem != null ? ItemService.calculateEquipmentScore(enemyItem) : 0;
+    final scoreDiff = enemyScore - myScore;
+
+    return Column(
+      children: [
+        // 슬롯 행 (좌우 대칭)
+        GestureDetector(
+          onTap: () {
+            setState(() {
+              _expandedSlot = isExpanded ? null : slot;
+            });
+          },
+          child: Container(
+            padding: const EdgeInsets.symmetric(vertical: 6, horizontal: 4),
+            decoration: BoxDecoration(
+              color: isSelected
+                  ? RetroColors.goldOf(context).withValues(alpha: 0.2)
+                  : isRecommended
+                      ? Colors.green.withValues(alpha: 0.1)
+                      : isExpanded
+                          ? RetroColors.panelBgOf(context)
+                          : Colors.transparent,
+              border: Border(
+                bottom: BorderSide(
+                  color: RetroColors.borderOf(context).withValues(alpha: 0.3),
+                ),
+              ),
+            ),
+            child: Row(
+              children: [
+                // 내 장비
+                Expanded(child: _buildEquipmentCell(context, myItem, myScore, Colors.blue)),
+                // 슬롯 아이콘 (중앙)
+                _buildSlotIndicator(context, slot, isSelected, isRecommended, scoreDiff),
+                // 상대 장비
+                Expanded(child: _buildEquipmentCell(context, enemyItem, enemyScore, Colors.red)),
+              ],
+            ),
+          ),
+        ),
+        // 확장된 비교 패널
+        if (isExpanded)
+          _buildExpandedPanel(context, slot, myItem, enemyItem, scoreDiff),
+      ],
+    );
+  }
+
+  /// 장비 셀 (한쪽)
+  Widget _buildEquipmentCell(
+    BuildContext context,
+    EquipmentItem? item,
+    int score,
+    Color accentColor,
+  ) {
+    final hasItem = item != null && item.isNotEmpty;
+    final rarityColor = hasItem ? _getRarityColor(item.rarity) : Colors.grey;
+
+    return Row(
+      children: [
+        // 아이템 이름
+        Expanded(
+          child: Text(
+            hasItem ? item.name : '-',
+            style: TextStyle(
+              fontFamily: 'PressStart2P',
+              fontSize: 5,
+              color: hasItem ? rarityColor : RetroColors.textMutedOf(context),
+            ),
+            maxLines: 1,
+            overflow: TextOverflow.ellipsis,
+          ),
+        ),
+        // 점수
+        Text(
+          '$score',
+          style: TextStyle(
+            fontFamily: 'PressStart2P',
+            fontSize: 5,
+            color: hasItem
+                ? RetroColors.textSecondaryOf(context)
+                : RetroColors.textMutedOf(context),
+          ),
+        ),
+      ],
+    );
+  }
+
+  /// 슬롯 인디케이터 (중앙)
+  Widget _buildSlotIndicator(
+    BuildContext context,
+    EquipmentSlot slot,
+    bool isSelected,
+    bool isRecommended,
+    int scoreDiff,
+  ) {
+    final Color borderColor;
+    final Color bgColor;
+
+    if (isSelected) {
+      borderColor = RetroColors.goldOf(context);
+      bgColor = RetroColors.goldOf(context).withValues(alpha: 0.3);
+    } else if (isRecommended) {
+      borderColor = Colors.green;
+      bgColor = Colors.green.withValues(alpha: 0.2);
+    } else {
+      borderColor = RetroColors.borderOf(context);
+      bgColor = RetroColors.panelBgOf(context);
+    }
+
+    return Container(
+      width: 56,
+      margin: const EdgeInsets.symmetric(horizontal: 4),
+      padding: const EdgeInsets.symmetric(vertical: 4, horizontal: 2),
+      decoration: BoxDecoration(
+        color: bgColor,
+        borderRadius: BorderRadius.circular(4),
+        border: Border.all(color: borderColor, width: isSelected ? 2 : 1),
+      ),
+      child: Column(
+        children: [
+          // 슬롯 아이콘
+          Icon(
+            _getSlotIcon(slot),
+            size: 12,
+            color: isSelected
+                ? RetroColors.goldOf(context)
+                : RetroColors.textSecondaryOf(context),
+          ),
+          const SizedBox(height: 2),
+          // 점수 변화
+          _buildScoreDiffBadge(context, scoreDiff, isRecommended),
+        ],
+      ),
+    );
+  }
+
+  /// 점수 변화 뱃지
+  Widget _buildScoreDiffBadge(
+    BuildContext context,
+    int scoreDiff,
+    bool isRecommended,
+  ) {
+    final Color diffColor;
+    final String diffText;
+
+    if (scoreDiff > 0) {
+      diffColor = Colors.green;
+      diffText = '+$scoreDiff';
+    } else if (scoreDiff < 0) {
+      diffColor = Colors.red;
+      diffText = '$scoreDiff';
+    } else {
+      diffColor = RetroColors.textMutedOf(context);
+      diffText = '±0';
+    }
+
+    return Row(
+      mainAxisAlignment: MainAxisAlignment.center,
+      children: [
+        if (isRecommended) ...[
+          Text(
+            _recommendedLabel,
+            style: const TextStyle(
+              fontFamily: 'PressStart2P',
+              fontSize: 4,
+              color: Colors.green,
+            ),
+          ),
+          const SizedBox(width: 2),
+        ],
+        Text(
+          diffText,
+          style: TextStyle(
+            fontFamily: 'PressStart2P',
+            fontSize: 5,
+            color: diffColor,
+            fontWeight: FontWeight.bold,
+          ),
+        ),
+      ],
+    );
+  }
+
+  /// 확장된 비교 패널
+  Widget _buildExpandedPanel(
+    BuildContext context,
+    EquipmentSlot slot,
+    EquipmentItem? myItem,
+    EquipmentItem? enemyItem,
+    int scoreDiff,
+  ) {
+    final Color resultColor;
+    final String resultText;
+    final IconData resultIcon;
+
+    if (scoreDiff > 0) {
+      resultColor = Colors.green;
+      resultText = 'You will GAIN +$scoreDiff';
+      resultIcon = Icons.arrow_upward;
+    } else if (scoreDiff < 0) {
+      resultColor = Colors.red;
+      resultText = 'You will LOSE $scoreDiff';
+      resultIcon = Icons.arrow_downward;
+    } else {
+      resultColor = RetroColors.textMutedOf(context);
+      resultText = 'Even trade';
+      resultIcon = Icons.swap_horiz;
+    }
+
+    return Container(
+      margin: const EdgeInsets.only(bottom: 8),
+      padding: const EdgeInsets.all(10),
+      decoration: BoxDecoration(
+        color: resultColor.withValues(alpha: 0.1),
+        borderRadius: BorderRadius.circular(6),
+        border: Border.all(color: resultColor.withValues(alpha: 0.5)),
+      ),
+      child: Column(
+        children: [
+          // 상세 비교 (좌우)
+          Row(
+            crossAxisAlignment: CrossAxisAlignment.start,
+            children: [
+              // 내 아이템 상세
+              Expanded(child: _buildItemDetail(context, myItem, Colors.blue)),
+              // VS 아이콘
+              Padding(
+                padding: const EdgeInsets.symmetric(horizontal: 8),
+                child: Icon(
+                  Icons.swap_horiz,
+                  color: RetroColors.textMutedOf(context),
+                  size: 20,
+                ),
+              ),
+              // 상대 아이템 상세
+              Expanded(child: _buildItemDetail(context, enemyItem, Colors.red)),
+            ],
+          ),
+          const SizedBox(height: 10),
+          // 교환 결과
+          Container(
+            padding: const EdgeInsets.symmetric(vertical: 6, horizontal: 12),
+            decoration: BoxDecoration(
+              color: resultColor.withValues(alpha: 0.15),
+              borderRadius: BorderRadius.circular(4),
+            ),
+            child: Row(
+              mainAxisAlignment: MainAxisAlignment.center,
+              mainAxisSize: MainAxisSize.min,
+              children: [
+                Icon(resultIcon, color: resultColor, size: 14),
+                const SizedBox(width: 6),
+                Text(
+                  resultText,
+                  style: TextStyle(
+                    fontFamily: 'PressStart2P',
+                    fontSize: 6,
+                    color: resultColor,
+                  ),
+                ),
+              ],
+            ),
+          ),
+          const SizedBox(height: 10),
+          // 선택 버튼
+          SizedBox(
+            width: double.infinity,
+            child: ElevatedButton(
+              onPressed: () {
+                widget.onSlotSelected(slot);
+                setState(() => _expandedSlot = null);
+              },
+              style: ElevatedButton.styleFrom(
+                backgroundColor: RetroColors.goldOf(context),
+                foregroundColor: RetroColors.backgroundOf(context),
+                padding: const EdgeInsets.symmetric(vertical: 8),
+                shape: RoundedRectangleBorder(
+                  borderRadius: BorderRadius.circular(4),
+                ),
+              ),
+              child: Text(
+                _selectSlotLabel,
+                style: TextStyle(
+                  fontFamily: 'PressStart2P',
+                  fontSize: 7,
+                  color: RetroColors.backgroundOf(context),
+                ),
+              ),
+            ),
+          ),
+        ],
+      ),
+    );
+  }
+
+  /// 아이템 상세 정보
+  Widget _buildItemDetail(
+    BuildContext context,
+    EquipmentItem? item,
+    Color accentColor,
+  ) {
+    final hasItem = item != null && item.isNotEmpty;
+    final rarityColor = hasItem ? _getRarityColor(item.rarity) : Colors.grey;
+    final score = hasItem ? ItemService.calculateEquipmentScore(item) : 0;
+
+    return Column(
+      crossAxisAlignment: CrossAxisAlignment.start,
+      children: [
+        // 아이템 이름
+        Text(
+          hasItem ? item.name : '(Empty)',
+          style: TextStyle(
+            fontFamily: 'PressStart2P',
+            fontSize: 6,
+            color: hasItem ? rarityColor : RetroColors.textMutedOf(context),
+          ),
+          maxLines: 2,
+          overflow: TextOverflow.ellipsis,
+        ),
+        const SizedBox(height: 4),
+        // 점수
+        Text(
+          'Score: $score',
+          style: TextStyle(
+            fontFamily: 'PressStart2P',
+            fontSize: 5,
+            color: RetroColors.textSecondaryOf(context),
+          ),
+        ),
+        // 스탯
+        if (hasItem) ...[
+          const SizedBox(height: 4),
+          _buildItemStats(context, item),
+        ],
+      ],
+    );
+  }
+
+  /// 아이템 스탯 표시
+  Widget _buildItemStats(BuildContext context, EquipmentItem item) {
+    final stats = item.stats;
+    final statWidgets = <Widget>[];
+
+    if (stats.atk > 0) {
+      statWidgets.add(_buildStatChip('ATK', stats.atk, Colors.red));
+    }
+    if (stats.def > 0) {
+      statWidgets.add(_buildStatChip('DEF', stats.def, Colors.blue));
+    }
+    if (stats.hpBonus > 0) {
+      statWidgets.add(_buildStatChip('HP', stats.hpBonus, Colors.green));
+    }
+    if (stats.mpBonus > 0) {
+      statWidgets.add(_buildStatChip('MP', stats.mpBonus, Colors.purple));
+    }
+
+    if (statWidgets.isEmpty) return const SizedBox.shrink();
+
+    return Wrap(
+      spacing: 3,
+      runSpacing: 3,
+      children: statWidgets,
+    );
+  }
+
+  Widget _buildStatChip(String label, int value, Color color) {
+    return Container(
+      padding: const EdgeInsets.symmetric(horizontal: 3, vertical: 1),
+      decoration: BoxDecoration(
+        color: color.withValues(alpha: 0.15),
+        borderRadius: BorderRadius.circular(2),
+      ),
+      child: Text(
+        '$label +$value',
+        style: TextStyle(
+          fontFamily: 'PressStart2P',
+          fontSize: 4,
+          color: color,
+        ),
+      ),
+    );
+  }
+
+  EquipmentItem? _findItem(EquipmentSlot slot, List<EquipmentItem>? items) {
+    if (items == null) return null;
+    for (final item in items) {
+      if (item.slot == slot) return item;
+    }
+    return null;
+  }
+
+  IconData _getSlotIcon(EquipmentSlot slot) {
+    return switch (slot) {
+      EquipmentSlot.weapon => Icons.gavel,
+      EquipmentSlot.shield => Icons.shield,
+      EquipmentSlot.helm => Icons.sports_mma,
+      EquipmentSlot.hauberk => Icons.checkroom,
+      EquipmentSlot.brassairts => Icons.front_hand,
+      EquipmentSlot.vambraces => Icons.back_hand,
+      EquipmentSlot.gauntlets => Icons.sports_handball,
+      EquipmentSlot.gambeson => Icons.dry_cleaning,
+      EquipmentSlot.cuisses => Icons.airline_seat_legroom_normal,
+      EquipmentSlot.greaves => Icons.snowshoeing,
+      EquipmentSlot.sollerets => Icons.do_not_step,
+    };
+  }
+
+  Color _getRarityColor(ItemRarity rarity) {
+    return switch (rarity) {
+      ItemRarity.common => Colors.grey.shade600,
+      ItemRarity.uncommon => Colors.green.shade600,
+      ItemRarity.rare => Colors.blue.shade600,
+      ItemRarity.epic => Colors.purple.shade600,
+      ItemRarity.legendary => Colors.orange.shade700,
+    };
+  }
+}

lib/src/features/arena/widgets/arena_idle_preview.dart

@@ -0,0 +1,181 @@
+import 'dart:async';
+
+import 'package:asciineverdie/src/core/animation/canvas/ascii_cell.dart';
+import 'package:asciineverdie/src/core/animation/canvas/ascii_canvas_widget.dart';
+import 'package:asciineverdie/src/core/animation/canvas/ascii_layer.dart';
+import 'package:asciineverdie/src/core/animation/character_frames.dart';
+import 'package:asciineverdie/src/core/animation/race_character_frames.dart';
+import 'package:flutter/material.dart';
+
+/// 아레나 idle 상태 캐릭터 미리보기 위젯
+///
+/// 좌측에 도전자, 우측에 상대(좌우 반전)를 idle 상태로 표시
+class ArenaIdlePreview extends StatefulWidget {
+  const ArenaIdlePreview({
+    super.key,
+    required this.challengerRaceId,
+    required this.opponentRaceId,
+  });
+
+  /// 도전자 종족 ID
+  final String? challengerRaceId;
+
+  /// 상대 종족 ID
+  final String? opponentRaceId;
+
+  @override
+  State<ArenaIdlePreview> createState() => _ArenaIdlePreviewState();
+}
+
+class _ArenaIdlePreviewState extends State<ArenaIdlePreview> {
+  /// 현재 idle 프레임 인덱스 (0~3)
+  int _frameIndex = 0;
+
+  /// 애니메이션 타이머
+  Timer? _timer;
+
+  /// 레이어 버전 (변경 감지용)
+  int _layerVersion = 0;
+
+  /// 캔버스 크기
+  static const int _gridWidth = 32;
+  static const int _gridHeight = 5;
+
+  /// 캐릭터 위치
+  static const int _leftCharX = 4;
+  static const int _rightCharX = 22;
+  static const int _charY = 1; // 상단 여백
+
+  @override
+  void initState() {
+    super.initState();
+    _startAnimation();
+  }
+
+  @override
+  void dispose() {
+    _timer?.cancel();
+    super.dispose();
+  }
+
+  void _startAnimation() {
+    // 200ms마다 프레임 업데이트 (원본 틱 속도)
+    _timer = Timer.periodic(const Duration(milliseconds: 200), (_) {
+      setState(() {
+        _frameIndex = (_frameIndex + 1) % 4;
+        _layerVersion++;
+      });
+    });
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    final layers = _composeLayers();
+
+    return SizedBox(
+      height: 60,
+      child: AsciiCanvasWidget(
+        layers: layers,
+        gridWidth: _gridWidth,
+        gridHeight: _gridHeight,
+        backgroundOpacity: 0.3,
+        isAnimating: true,
+        layerVersion: _layerVersion,
+      ),
+    );
+  }
+
+  /// 레이어 합성
+  List<AsciiLayer> _composeLayers() {
+    final layers = <AsciiLayer>[];
+
+    // 도전자 캐릭터 (좌측, 정방향)
+    final challengerLayer = _createCharacterLayer(
+      widget.challengerRaceId,
+      _leftCharX,
+      mirrored: false,
+    );
+    layers.add(challengerLayer);
+
+    // 상대 캐릭터 (우측, 좌우 반전)
+    final opponentLayer = _createCharacterLayer(
+      widget.opponentRaceId,
+      _rightCharX,
+      mirrored: true,
+    );
+    layers.add(opponentLayer);
+
+    return layers;
+  }
+
+  /// 캐릭터 레이어 생성
+  AsciiLayer _createCharacterLayer(
+    String? raceId,
+    int xOffset, {
+    required bool mirrored,
+  }) {
+    // 종족별 idle 프레임 조회
+    CharacterFrame frame;
+    if (raceId != null && raceId.isNotEmpty) {
+      final raceData = RaceCharacterFrames.get(raceId);
+      if (raceData != null) {
+        frame = raceData.idle[_frameIndex % raceData.idle.length];
+      } else {
+        frame = getCharacterFrame(BattlePhase.idle, _frameIndex);
+      }
+    } else {
+      frame = getCharacterFrame(BattlePhase.idle, _frameIndex);
+    }
+
+    // 미러링 적용
+    final lines = mirrored ? _mirrorLines(frame.lines) : frame.lines;
+
+    // 셀 변환
+    final cells = _spriteToCells(lines);
+
+    return AsciiLayer(
+      cells: cells,
+      zIndex: 1,
+      offsetX: xOffset,
+      offsetY: _charY,
+    );
+  }
+
+  /// 문자열 좌우 반전
+  List<String> _mirrorLines(List<String> lines) {
+    return lines.map((line) {
+      final chars = line.split('');
+      final mirrored = chars.reversed.map(_mirrorChar).toList();
+      return mirrored.join();
+    }).toList();
+  }
+
+  /// 개별 문자 미러링 (방향성 문자 변환)
+  String _mirrorChar(String char) {
+    return switch (char) {
+      '/' => r'\',
+      r'\' => '/',
+      '(' => ')',
+      ')' => '(',
+      '[' => ']',
+      ']' => '[',
+      '{' => '}',
+      '}' => '{',
+      '<' => '>',
+      '>' => '<',
+      '┘' => '└',
+      '└' => '┘',
+      '┐' => '┌',
+      '┌' => '┐',
+      'λ' => 'λ', // 대칭
+      _ => char,
+    };
+  }
+
+  /// 문자열 스프라이트를 AsciiCell 2D 배열로 변환
+  List<List<AsciiCell>> _spriteToCells(List<String> lines) {
+    return lines.map((line) {
+      return line.split('').map(AsciiCell.fromChar).toList();
+    }).toList();
+  }
+}

lib/src/features/arena/widgets/arena_rank_card.dart

@@ -0,0 +1,208 @@
+import 'package:flutter/material.dart';
+
+import 'package:asciineverdie/src/core/l10n/game_data_l10n.dart';
+import 'package:asciineverdie/src/core/model/hall_of_fame.dart';
+import 'package:asciineverdie/src/shared/retro_colors.dart';
+
+/// 아레나 순위 카드 위젯
+///
+/// 명예의 전당 캐릭터를 순위와 함께 표시
+class ArenaRankCard extends StatelessWidget {
+  const ArenaRankCard({
+    super.key,
+    required this.entry,
+    required this.rank,
+    required this.score,
+    this.isSelected = false,
+    this.isHighlighted = false,
+    this.compact = false,
+    this.onTap,
+  });
+
+  /// 캐릭터 엔트리
+  final HallOfFameEntry entry;
+
+  /// 순위 (1-based)
+  final int rank;
+
+  /// 아레나 점수
+  final int score;
+
+  /// 선택 상태 (상대로 선택됨)
+  final bool isSelected;
+
+  /// 하이라이트 상태 (내 캐릭터 표시)
+  final bool isHighlighted;
+
+  /// 컴팩트 모드 (작은 사이즈)
+  final bool compact;
+
+  /// 탭 콜백
+  final VoidCallback? onTap;
+
+  @override
+  Widget build(BuildContext context) {
+    final rankColor = _getRankColor(rank);
+    final rankIcon = _getRankIcon(rank);
+
+    // 배경색 결정
+    Color bgColor;
+    Color borderColor;
+    if (isSelected) {
+      bgColor = Colors.red.withValues(alpha: 0.15);
+      borderColor = Colors.red;
+    } else if (isHighlighted) {
+      bgColor = Colors.blue.withValues(alpha: 0.15);
+      borderColor = Colors.blue;
+    } else {
+      bgColor = RetroColors.panelBgOf(context);
+      borderColor = RetroColors.borderOf(context);
+    }
+
+    return Card(
+      margin: EdgeInsets.symmetric(
+        vertical: compact ? 2 : 4,
+        horizontal: compact ? 0 : 8,
+      ),
+      color: bgColor,
+      shape: RoundedRectangleBorder(
+        borderRadius: BorderRadius.circular(compact ? 6 : 8),
+        side: BorderSide(
+          color: borderColor,
+          width: (isSelected || isHighlighted) ? 2 : 1,
+        ),
+      ),
+      child: InkWell(
+        onTap: onTap,
+        borderRadius: BorderRadius.circular(compact ? 6 : 8),
+        child: Padding(
+          padding: EdgeInsets.all(compact ? 8 : 12),
+          child: Row(
+            children: [
+              // 순위 배지
+              _buildRankBadge(rankColor, rankIcon),
+              SizedBox(width: compact ? 8 : 12),
+              // 캐릭터 정보
+              Expanded(child: _buildCharacterInfo(context)),
+              // 점수
+              if (!compact) _buildScoreColumn(context),
+            ],
+          ),
+        ),
+      ),
+    );
+  }
+
+  Widget _buildRankBadge(Color color, IconData? icon) {
+    final size = compact ? 24.0 : 36.0;
+    final iconSize = compact ? 12.0 : 18.0;
+    final fontSize = compact ? 7.0 : 10.0;
+
+    return Container(
+      width: size,
+      height: size,
+      decoration: BoxDecoration(
+        color: color.withValues(alpha: 0.2),
+        shape: BoxShape.circle,
+        border: Border.all(color: color, width: compact ? 1.5 : 2),
+      ),
+      child: Center(
+        child: icon != null
+            ? Icon(icon, color: color, size: iconSize)
+            : Text(
+                '$rank',
+                style: TextStyle(
+                  fontFamily: 'PressStart2P',
+                  fontSize: fontSize,
+                  color: color,
+                  fontWeight: FontWeight.bold,
+                ),
+              ),
+      ),
+    );
+  }
+
+  Widget _buildCharacterInfo(BuildContext context) {
+    return Column(
+      crossAxisAlignment: CrossAxisAlignment.start,
+      children: [
+        // 이름
+        Text(
+          entry.characterName,
+          style: TextStyle(
+            fontFamily: 'PressStart2P',
+            fontSize: compact ? 6 : 9,
+            color: RetroColors.textPrimaryOf(context),
+          ),
+          overflow: TextOverflow.ellipsis,
+          maxLines: 1,
+        ),
+        SizedBox(height: compact ? 2 : 4),
+        // 종족/클래스 + 레벨
+        Text(
+          compact
+              ? 'Lv.${entry.level}'
+              : '${GameDataL10n.getRaceName(context, entry.race)} '
+                  '${GameDataL10n.getKlassName(context, entry.klass)} '
+                  'Lv.${entry.level}',
+          style: TextStyle(
+            fontFamily: 'PressStart2P',
+            fontSize: compact ? 5 : 7,
+            color: RetroColors.textSecondaryOf(context),
+          ),
+        ),
+      ],
+    );
+  }
+
+  Widget _buildScoreColumn(BuildContext context) {
+    return Column(
+      crossAxisAlignment: CrossAxisAlignment.end,
+      children: [
+        Text(
+          '$score',
+          style: TextStyle(
+            fontFamily: 'PressStart2P',
+            fontSize: 10,
+            color: RetroColors.goldOf(context),
+            fontWeight: FontWeight.bold,
+          ),
+        ),
+        Text(
+          'SCORE',
+          style: TextStyle(
+            fontFamily: 'PressStart2P',
+            fontSize: 6,
+            color: RetroColors.textMutedOf(context),
+          ),
+        ),
+      ],
+    );
+  }
+
+  Color _getRankColor(int rank) {
+    switch (rank) {
+      case 1:
+        return Colors.amber.shade700;
+      case 2:
+        return Colors.grey.shade500;
+      case 3:
+        return Colors.brown.shade400;
+      default:
+        return Colors.blue.shade400;
+    }
+  }
+
+  IconData? _getRankIcon(int rank) {
+    switch (rank) {
+      case 1:
+        return Icons.emoji_events;
+      case 2:
+        return Icons.workspace_premium;
+      case 3:
+        return Icons.military_tech;
+      default:
+        return null;
+    }
+  }
+}

lib/src/features/arena/widgets/arena_result_dialog.dart

@@ -0,0 +1,437 @@
+import 'package:flutter/material.dart';
+
+import 'package:asciineverdie/data/game_text_l10n.dart' as l10n;
+import 'package:asciineverdie/src/core/engine/item_service.dart';
+import 'package:asciineverdie/src/core/model/arena_match.dart';
+import 'package:asciineverdie/src/core/model/equipment_item.dart';
+import 'package:asciineverdie/src/core/model/equipment_slot.dart';
+import 'package:asciineverdie/src/core/model/item_stats.dart';
+import 'package:asciineverdie/src/shared/retro_colors.dart';
+
+// 아레나 관련 임시 문자열 (추후 l10n으로 이동)
+const _arenaVictory = 'VICTORY!';
+const _arenaDefeat = 'DEFEAT...';
+const _arenaExchange = 'EQUIPMENT EXCHANGE';
+
+/// 아레나 결과 다이얼로그
+///
+/// 전투 승패 및 장비 교환 결과 표시
+class ArenaResultDialog extends StatelessWidget {
+  const ArenaResultDialog({
+    super.key,
+    required this.result,
+    required this.onClose,
+  });
+
+  /// 대전 결과
+  final ArenaMatchResult result;
+
+  /// 닫기 콜백
+  final VoidCallback onClose;
+
+  @override
+  Widget build(BuildContext context) {
+    final isVictory = result.isVictory;
+    final resultColor = isVictory ? Colors.amber : Colors.red;
+    final slot = result.match.bettingSlot;
+
+    return AlertDialog(
+      backgroundColor: RetroColors.panelBgOf(context),
+      shape: RoundedRectangleBorder(
+        borderRadius: BorderRadius.circular(12),
+        side: BorderSide(color: resultColor, width: 2),
+      ),
+      title: _buildTitle(context, isVictory, resultColor),
+      content: ConstrainedBox(
+        constraints: const BoxConstraints(maxWidth: 350),
+        child: Column(
+          mainAxisSize: MainAxisSize.min,
+          children: [
+            // 전투 정보
+            _buildBattleInfo(context),
+            const SizedBox(height: 16),
+            const Divider(),
+            const SizedBox(height: 16),
+            // 장비 교환 결과
+            _buildExchangeResult(context, slot),
+          ],
+        ),
+      ),
+      actions: [
+        FilledButton(
+          onPressed: onClose,
+          style: FilledButton.styleFrom(
+            backgroundColor: resultColor,
+          ),
+          child: Text(
+            l10n.buttonConfirm,
+            style: const TextStyle(
+              fontFamily: 'PressStart2P',
+              fontSize: 8,
+            ),
+          ),
+        ),
+      ],
+    );
+  }
+
+  Widget _buildTitle(BuildContext context, bool isVictory, Color color) {
+    return Row(
+      mainAxisAlignment: MainAxisAlignment.center,
+      children: [
+        Icon(
+          isVictory ? Icons.emoji_events : Icons.sentiment_very_dissatisfied,
+          color: color,
+          size: 28,
+        ),
+        const SizedBox(width: 8),
+        Text(
+          isVictory ? _arenaVictory : _arenaDefeat,
+          style: TextStyle(
+            fontFamily: 'PressStart2P',
+            fontSize: 12,
+            color: color,
+          ),
+        ),
+        const SizedBox(width: 8),
+        Icon(
+          isVictory ? Icons.emoji_events : Icons.sentiment_very_dissatisfied,
+          color: color,
+          size: 28,
+        ),
+      ],
+    );
+  }
+
+  Widget _buildBattleInfo(BuildContext context) {
+    return Row(
+      mainAxisAlignment: MainAxisAlignment.spaceEvenly,
+      children: [
+        // 도전자 정보
+        _buildFighterInfo(
+          context,
+          result.match.challenger.characterName,
+          result.isVictory,
+        ),
+        // VS
+        Text(
+          'VS',
+          style: TextStyle(
+            fontFamily: 'PressStart2P',
+            fontSize: 10,
+            color: RetroColors.textMutedOf(context),
+          ),
+        ),
+        // 상대 정보
+        _buildFighterInfo(
+          context,
+          result.match.opponent.characterName,
+          !result.isVictory,
+        ),
+      ],
+    );
+  }
+
+  Widget _buildFighterInfo(BuildContext context, String name, bool isWinner) {
+    return Column(
+      children: [
+        Icon(
+          isWinner ? Icons.emoji_events : Icons.close,
+          color: isWinner ? Colors.amber : Colors.grey,
+          size: 24,
+        ),
+        const SizedBox(height: 4),
+        Text(
+          name,
+          style: TextStyle(
+            fontFamily: 'PressStart2P',
+            fontSize: 7,
+            color: isWinner
+                ? RetroColors.goldOf(context)
+                : RetroColors.textMutedOf(context),
+          ),
+          maxLines: 1,
+          overflow: TextOverflow.ellipsis,
+        ),
+        Text(
+          isWinner ? 'WINNER' : 'LOSER',
+          style: TextStyle(
+            fontFamily: 'PressStart2P',
+            fontSize: 6,
+            color: isWinner ? Colors.amber : Colors.grey,
+          ),
+        ),
+      ],
+    );
+  }
+
+  Widget _buildExchangeResult(BuildContext context, EquipmentSlot slot) {
+    // 교환된 장비 찾기
+    final challengerOldItem = _findItem(
+      result.match.challenger.finalEquipment,
+      slot,
+    );
+    final opponentOldItem = _findItem(
+      result.match.opponent.finalEquipment,
+      slot,
+    );
+
+    final challengerNewItem = _findItem(
+      result.updatedChallenger.finalEquipment,
+      slot,
+    );
+    final opponentNewItem = _findItem(
+      result.updatedOpponent.finalEquipment,
+      slot,
+    );
+
+    return Column(
+      children: [
+        // 교환 타이틀
+        Row(
+          mainAxisAlignment: MainAxisAlignment.center,
+          children: [
+            Icon(
+              Icons.swap_horiz,
+              color: RetroColors.goldOf(context),
+              size: 20,
+            ),
+            const SizedBox(width: 8),
+            Text(
+              _arenaExchange,
+              style: TextStyle(
+                fontFamily: 'PressStart2P',
+                fontSize: 8,
+                color: RetroColors.goldOf(context),
+              ),
+            ),
+          ],
+        ),
+        const SizedBox(height: 12),
+        // 슬롯 정보
+        Text(
+          _getSlotLabel(slot),
+          style: TextStyle(
+            fontFamily: 'PressStart2P',
+            fontSize: 7,
+            color: RetroColors.textSecondaryOf(context),
+          ),
+        ),
+        const SizedBox(height: 12),
+        // 내 캐릭터 장비 변경
+        _buildExchangeRow(
+          context,
+          result.match.challenger.characterName,
+          challengerOldItem,
+          challengerNewItem,
+          result.isVictory,
+        ),
+        const SizedBox(height: 8),
+        // 상대 장비 변경
+        _buildExchangeRow(
+          context,
+          result.match.opponent.characterName,
+          opponentOldItem,
+          opponentNewItem,
+          !result.isVictory,
+        ),
+      ],
+    );
+  }
+
+  Widget _buildExchangeRow(
+    BuildContext context,
+    String name,
+    EquipmentItem? oldItem,
+    EquipmentItem? newItem,
+    bool isWinner,
+  ) {
+    final oldScore =
+        oldItem != null ? ItemService.calculateEquipmentScore(oldItem) : 0;
+    final newScore =
+        newItem != null ? ItemService.calculateEquipmentScore(newItem) : 0;
+    final scoreDiff = newScore - oldScore;
+    final isGain = scoreDiff > 0;
+
+    return Container(
+      padding: const EdgeInsets.all(8),
+      decoration: BoxDecoration(
+        color: isWinner
+            ? Colors.green.withValues(alpha: 0.1)
+            : Colors.red.withValues(alpha: 0.1),
+        borderRadius: BorderRadius.circular(8),
+        border: Border.all(
+          color: isWinner
+              ? Colors.green.withValues(alpha: 0.3)
+              : Colors.red.withValues(alpha: 0.3),
+        ),
+      ),
+      child: Column(
+        crossAxisAlignment: CrossAxisAlignment.start,
+        children: [
+          // 이름
+          Text(
+            name,
+            style: TextStyle(
+              fontFamily: 'PressStart2P',
+              fontSize: 7,
+              color: RetroColors.textPrimaryOf(context),
+            ),
+          ),
+          const SizedBox(height: 4),
+          // 장비 변경
+          Row(
+            children: [
+              // 이전 장비
+              Expanded(
+                child: _buildItemChip(
+                  context,
+                  oldItem,
+                  oldScore,
+                  isOld: true,
+                ),
+              ),
+              Padding(
+                padding: const EdgeInsets.symmetric(horizontal: 4),
+                child: Icon(
+                  Icons.arrow_forward,
+                  size: 14,
+                  color: RetroColors.textMutedOf(context),
+                ),
+              ),
+              // 새 장비
+              Expanded(
+                child: _buildItemChip(
+                  context,
+                  newItem,
+                  newScore,
+                  isOld: false,
+                ),
+              ),
+            ],
+          ),
+          const SizedBox(height: 4),
+          // 점수 변화
+          Align(
+            alignment: Alignment.centerRight,
+            child: Text(
+              '${isGain ? '+' : ''}$scoreDiff pt',
+              style: TextStyle(
+                fontFamily: 'PressStart2P',
+                fontSize: 7,
+                color: isGain ? Colors.green : Colors.red,
+              ),
+            ),
+          ),
+        ],
+      ),
+    );
+  }
+
+  Widget _buildItemChip(
+    BuildContext context,
+    EquipmentItem? item,
+    int score, {
+    required bool isOld,
+  }) {
+    if (item == null || item.isEmpty) {
+      return Text(
+        '(empty)',
+        style: TextStyle(
+          fontFamily: 'PressStart2P',
+          fontSize: 6,
+          color: RetroColors.textMutedOf(context),
+        ),
+      );
+    }
+
+    final rarityColor = _getRarityColor(item.rarity);
+
+    return Container(
+      padding: const EdgeInsets.symmetric(horizontal: 4, vertical: 2),
+      decoration: BoxDecoration(
+        color: rarityColor.withValues(alpha: isOld ? 0.1 : 0.2),
+        borderRadius: BorderRadius.circular(4),
+        border: Border.all(
+          color: rarityColor.withValues(alpha: 0.5),
+        ),
+      ),
+      child: Column(
+        crossAxisAlignment: CrossAxisAlignment.start,
+        children: [
+          Text(
+            item.name,
+            style: TextStyle(
+              fontFamily: 'PressStart2P',
+              fontSize: 5,
+              color: rarityColor,
+            ),
+            maxLines: 1,
+            overflow: TextOverflow.ellipsis,
+          ),
+          Text(
+            '$score pt',
+            style: TextStyle(
+              fontFamily: 'PressStart2P',
+              fontSize: 5,
+              color: RetroColors.textMutedOf(context),
+            ),
+          ),
+        ],
+      ),
+    );
+  }
+
+  EquipmentItem? _findItem(List<EquipmentItem>? equipment, EquipmentSlot slot) {
+    if (equipment == null) return null;
+    for (final item in equipment) {
+      if (item.slot == slot) return item;
+    }
+    return null;
+  }
+
+  String _getSlotLabel(EquipmentSlot slot) {
+    return switch (slot) {
+      EquipmentSlot.weapon => l10n.slotWeapon,
+      EquipmentSlot.shield => l10n.slotShield,
+      EquipmentSlot.helm => l10n.slotHelm,
+      EquipmentSlot.hauberk => l10n.slotHauberk,
+      EquipmentSlot.brassairts => l10n.slotBrassairts,
+      EquipmentSlot.vambraces => l10n.slotVambraces,
+      EquipmentSlot.gauntlets => l10n.slotGauntlets,
+      EquipmentSlot.gambeson => l10n.slotGambeson,
+      EquipmentSlot.cuisses => l10n.slotCuisses,
+      EquipmentSlot.greaves => l10n.slotGreaves,
+      EquipmentSlot.sollerets => l10n.slotSollerets,
+    };
+  }
+
+  Color _getRarityColor(ItemRarity rarity) {
+    return switch (rarity) {
+      ItemRarity.common => Colors.grey.shade600,
+      ItemRarity.uncommon => Colors.green.shade600,
+      ItemRarity.rare => Colors.blue.shade600,
+      ItemRarity.epic => Colors.purple.shade600,
+      ItemRarity.legendary => Colors.orange.shade700,
+    };
+  }
+}
+
+/// 아레나 결과 다이얼로그 표시
+Future<void> showArenaResultDialog(
+  BuildContext context, {
+  required ArenaMatchResult result,
+  required VoidCallback onClose,
+}) {
+  return showDialog(
+    context: context,
+    barrierDismissible: false,
+    builder: (context) => ArenaResultDialog(
+      result: result,
+      onClose: () {
+        Navigator.of(context).pop();
+        onClose();
+      },
+    ),
+  );
+}

lib/src/features/front/front_screen.dart

@@ -16,8 +16,10 @@ class FrontScreen extends StatelessWidget {
     this.onNewCharacter,
     this.onLoadSave,
     this.onHallOfFame,
+    this.onLocalArena,
     this.hasSaveFile = false,
     this.savedGamePreview,
+    this.hallOfFameCount = 0,
   });
 
   /// "New character" 버튼 클릭 시 호출
@@ -29,12 +31,18 @@ class FrontScreen extends StatelessWidget {
   /// "Hall of Fame" 버튼 클릭 시 호출
   final void Function(BuildContext context)? onHallOfFame;
 
+  /// "Local Arena" 버튼 클릭 시 호출
+  final void Function(BuildContext context)? onLocalArena;
+
   /// 세이브 파일 존재 여부 (새 캐릭터 시 경고용)
   final bool hasSaveFile;
 
   /// 저장된 게임 미리보기 정보
   final SavedGamePreview? savedGamePreview;
 
+  /// 명예의 전당 캐릭터 수 (아레나 활성화 조건: 2명 이상)
+  final int hallOfFameCount;
+
   /// 새 캐릭터 생성 시 세이브 파일 존재하면 경고 표시
   void _handleNewCharacter(BuildContext context) {
     if (hasSaveFile) {
@@ -99,7 +107,12 @@ class FrontScreen extends StatelessWidget {
                           onHallOfFame: onHallOfFame != null
                               ? () => onHallOfFame!(context)
                               : null,
+                          onLocalArena: onLocalArena != null &&
+                                  hallOfFameCount >= 2
+                              ? () => onLocalArena!(context)
+                              : null,
                           savedGamePreview: savedGamePreview,
+                          hallOfFameCount: hallOfFameCount,
                         ),
                       ],
                     ),
@@ -199,13 +212,17 @@ class _ActionButtons extends StatelessWidget {
     this.onNewCharacter,
     this.onLoadSave,
     this.onHallOfFame,
+    this.onLocalArena,
     this.savedGamePreview,
+    this.hallOfFameCount = 0,
   });
 
   final VoidCallback? onNewCharacter;
   final VoidCallback? onLoadSave;
   final VoidCallback? onHallOfFame;
+  final VoidCallback? onLocalArena;
   final SavedGamePreview? savedGamePreview;
+  final int hallOfFameCount;
 
   @override
   Widget build(BuildContext context) {
@@ -245,6 +262,16 @@ class _ActionButtons extends StatelessWidget {
               onPressed: onHallOfFame,
               isPrimary: false,
             ),
+          // 로컬 아레나 (2명 이상일 때만 활성화)
+          if (hallOfFameCount >= 2) ...[
+            const SizedBox(height: 12),
+            RetroTextButton(
+              text: game_l10n.uiLocalArena,
+              icon: Icons.sports_kabaddi,
+              onPressed: onLocalArena,
+              isPrimary: false,
+            ),
+          ],
         ],
       ),
     );

lib/src/features/game/widgets/ascii_animation_card.dart

@@ -50,6 +50,8 @@ class AsciiAnimationCard extends StatefulWidget {
     this.latestCombatEvent,
     this.raceId,
     this.weaponRarity,
+    this.opponentRaceId,
+    this.opponentHasShield = false,
   });
 
   final TaskType taskType;
@@ -89,6 +91,12 @@ class AsciiAnimationCard extends StatefulWidget {
   /// 무기 희귀도 (Phase 9: 무기 등급별 이펙트 색상)
   final ItemRarity? weaponRarity;
 
+  /// 상대 종족 ID (PvP 모드: 설정 시 몬스터 대신 캐릭터 표시)
+  final String? opponentRaceId;
+
+  /// 상대 방패 장착 여부 (PvP 모드)
+  final bool opponentHasShield;
+
   @override
   State<AsciiAnimationCard> createState() => _AsciiAnimationCardState();
 }
@@ -208,7 +216,9 @@ class _AsciiAnimationCardState extends State<AsciiAnimationCard> {
         oldWidget.shieldName != widget.shieldName ||
         oldWidget.monsterLevel != widget.monsterLevel ||
         oldWidget.raceId != widget.raceId ||
-        oldWidget.weaponRarity != widget.weaponRarity) {
+        oldWidget.weaponRarity != widget.weaponRarity ||
+        oldWidget.opponentRaceId != widget.opponentRaceId ||
+        oldWidget.opponentHasShield != widget.opponentHasShield) {
       _updateAnimation();
     }
   }
@@ -445,6 +455,8 @@ class _AsciiAnimationCardState extends State<AsciiAnimationCard> {
       monsterSize: monsterSize,
       raceId: widget.raceId,
       weaponRarity: widget.weaponRarity,
+      opponentRaceId: widget.opponentRaceId,
+      opponentHasShield: widget.opponentHasShield,
     );
 
     // 환경 타입 추론