diff --git a/lib/src/core/notification/notification_service.dart b/lib/src/core/notification/notification_service.dart
index a456c15..ecaa19c 100644
--- a/lib/src/core/notification/notification_service.dart
+++ b/lib/src/core/notification/notification_service.dart
@@ -1,5 +1,7 @@
 import 'dart:async';
 
+import 'package:asciineverdie/data/game_text_l10n.dart' as game_l10n;
+
 /// 알림 타입 (Notification Type)
 enum NotificationType {
   levelUp, // 레벨업
@@ -62,8 +64,8 @@ class NotificationService {
     show(
       GameNotification(
         type: NotificationType.levelUp,
-        title: 'LEVEL UP!',
-        subtitle: 'Level $newLevel',
+        title: game_l10n.notifyLevelUp,
+        subtitle: game_l10n.notifyLevel(newLevel),
         data: {'level': newLevel},
         duration: const Duration(seconds: 2),
       ),
@@ -75,7 +77,7 @@ class NotificationService {
     show(
       GameNotification(
         type: NotificationType.questComplete,
-        title: 'QUEST COMPLETE!',
+        title: game_l10n.notifyQuestComplete,
         subtitle: questName,
         data: {'quest': questName},
         duration: const Duration(seconds: 2),
@@ -87,8 +89,8 @@ class NotificationService {
   /// actNumber: 0=프롤로그, 1=Act I, 2=Act II, ...
   void showActComplete(int actNumber) {
     final title = actNumber == 0
-        ? 'PROLOGUE COMPLETE!'
-        : 'ACT $actNumber COMPLETE!';
+        ? game_l10n.notifyPrologueComplete
+        : game_l10n.notifyActComplete(actNumber);
     show(
       GameNotification(
         type: NotificationType.actComplete,
@@ -103,7 +105,7 @@ class NotificationService {
     show(
       GameNotification(
         type: NotificationType.newSpell,
-        title: 'NEW SPELL!',
+        title: game_l10n.notifyNewSpell,
         subtitle: spellName,
         data: {'spell': spellName},
         duration: const Duration(seconds: 2),
@@ -116,7 +118,7 @@ class NotificationService {
     show(
       GameNotification(
         type: NotificationType.newEquipment,
-        title: 'NEW EQUIPMENT!',
+        title: game_l10n.notifyNewEquipment,
         subtitle: equipmentName,
         data: {'equipment': equipmentName, 'slot': slot},
         duration: const Duration(seconds: 2),
@@ -129,7 +131,7 @@ class NotificationService {
     show(
       GameNotification(
         type: NotificationType.bossDefeat,
-        title: 'BOSS DEFEATED!',
+        title: game_l10n.notifyBossDefeated,
         subtitle: bossName,
         data: {'boss': bossName},
         duration: const Duration(seconds: 3),
diff --git a/lib/src/features/front/front_screen.dart b/lib/src/features/front/front_screen.dart
index 76848d4..05af3d3 100644
--- a/lib/src/features/front/front_screen.dart
+++ b/lib/src/features/front/front_screen.dart
@@ -217,9 +217,9 @@ class _AnimationPanel extends StatelessWidget {
         children: [
           const Icon(Icons.auto_awesome, color: RetroColors.gold, size: 18),
           const SizedBox(width: 10),
-          const Text(
-            'ASCII NEVER DIE',
-            style: TextStyle(
+          Text(
+            L10n.of(context).appTitle.toUpperCase(),
+            style: const TextStyle(
               fontFamily: 'PressStart2P',
               fontSize: 14,
               color: RetroColors.gold,
@@ -272,7 +272,7 @@ class _ActionButtons extends StatelessWidget {
     final l10n = L10n.of(context);
 
     return RetroPanel(
-      title: 'MENU',
+      title: L10n.of(context).menuTitle,
       padding: const EdgeInsets.all(12),
       child: Column(
         crossAxisAlignment: CrossAxisAlignment.stretch,
diff --git a/lib/src/features/game/game_play_screen.dart b/lib/src/features/game/game_play_screen.dart
index acae2e6..b852271 100644
--- a/lib/src/features/game/game_play_screen.dart
+++ b/lib/src/features/game/game_play_screen.dart
@@ -551,150 +551,135 @@ class _GamePlayScreenState extends State<GamePlayScreen>
       return const Scaffold(body: Center(child: CircularProgressIndicator()));
     }
 
-    // 로케일 변경 시 전체 위젯 트리 강제 리빌드를 위한 Key
     final localeKey = ValueKey(game_l10n.currentGameLocale);
 
-    // 캐로셀 레이아웃 사용 여부 확인
     if (_shouldUseCarouselLayout(context)) {
-      return NotificationOverlay(
-        key: localeKey,
-        notificationService: _notificationService,
-        child: PopScope(
-          canPop: false,
-          onPopInvokedWithResult: (didPop, result) async {
-            if (didPop) return;
-            final shouldPop = await _onPopInvoked();
-            if (shouldPop && context.mounted) {
-              await widget.controller.pause(saveOnStop: false);
-              if (context.mounted) {
-                Navigator.of(context).pop();
-              }
-            }
-          },
-          child: Stack(
-            children: [
-              MobileCarouselLayout(
-                state: state,
-                combatLogEntries: _combatLogController.entries,
-                speedMultiplier: widget.controller.loop?.speedMultiplier ?? 1,
-                onSpeedCycle: () {
-                  widget.controller.loop?.cycleSpeed();
-                  setState(() {});
-                },
-                onSetSpeed: (speed) {
-                  widget.controller.loop?.setSpeed(speed);
-                  setState(() {});
-                },
-                // 특수 애니메이션 중에는 일시정지 상태로 표시하지 않음
-                isPaused:
-                    !widget.controller.isRunning && _specialAnimation == null,
-                onPauseToggle: () async {
-                  await widget.controller.togglePause();
-                  setState(() {});
-                },
-                onSave: _saveGameState,
-                onExit: () async {
-                  final shouldExit = await _onPopInvoked();
-                  if (shouldExit && context.mounted) {
-                    await widget.controller.pause(saveOnStop: false);
-                    if (context.mounted) {
-                      Navigator.of(context).pop();
-                    }
-                  }
-                },
-                notificationService: _notificationService,
-                specialAnimation: _specialAnimation,
-                onLanguageChange: (locale) async {
-                  // navigator 참조를 async gap 전에 저장
-                  final navigator = Navigator.of(context);
-                  // 1. 현재 상태 저장
-                  await widget.controller.pause(saveOnStop: true);
-                  // 2. 로케일 변경
-                  game_l10n.setGameLocale(locale);
-                  // 3. 화면 재생성 (전체 UI 재구성)
-                  if (context.mounted) {
-                    await widget.controller.resume();
-                    navigator.pushReplacement(
-                      MaterialPageRoute<void>(
-                        builder: (_) => GamePlayScreen(
-                          controller: widget.controller,
-                          audioService: widget.audioService,
-                        ),
-                      ),
-                    );
-                  }
-                },
-                onDeleteSaveAndNewGame: () async {
-                  // 게임 루프 중지
-                  await widget.controller.pause(saveOnStop: false);
-                  // 세이브 파일 삭제
-                  await widget.controller.saveManager.deleteSave();
-                  // 캐릭터 생성 화면으로 돌아가기
-                  if (context.mounted) {
-                    Navigator.of(context).pop();
-                  }
-                },
-                // 사운드 설정
-                bgmVolume: _audioController.bgmVolume,
-                sfxVolume: _audioController.sfxVolume,
-                onBgmVolumeChange: (volume) {
-                  _audioController.setBgmVolume(volume);
-                  setState(() {});
-                },
-                onSfxVolumeChange: (volume) {
-                  _audioController.setSfxVolume(volume);
-                  setState(() {});
-                },
-                // 통계 및 도움말
-                onShowStatistics: () => _showStatisticsDialog(context),
-                onShowHelp: () => HelpDialog.show(context),
-                // 치트 (디버그 모드)
-                cheatsEnabled: widget.controller.cheatsEnabled,
-                onCheatTask: () => widget.controller.loop?.cheatCompleteTask(),
-                onCheatQuest: () =>
-                    widget.controller.loop?.cheatCompleteQuest(),
-                onCheatPlot: () => widget.controller.loop?.cheatCompletePlot(),
-                onCreateTestCharacter: () async {
-                  final navigator = Navigator.of(context);
-                  final success = await widget.controller.createTestCharacter();
-                  if (success && mounted) {
-                    navigator.popUntil((route) => route.isFirst);
-                  }
-                },
-                // 수익화 버프 (자동부활, 광고배속)
-                autoReviveEndMs: widget.controller.monetization.autoReviveEndMs,
-                speedBoostEndMs: widget.controller.monetization.speedBoostEndMs,
-                isPaidUser: widget.controller.monetization.isPaidUser,
-                onSpeedBoostActivate: _handleSpeedBoost,
-                isSpeedBoostActive: widget.controller.isSpeedBoostActive,
-                adSpeedMultiplier: widget.controller.adSpeedMultiplier,
-                has2xUnlocked: widget.controller.has2xUnlocked,
-              ),
-              // 사망 오버레이
-              if (state.isDead && state.deathInfo != null)
-                DeathOverlay(
-                  deathInfo: state.deathInfo!,
-                  traits: state.traits,
-                  onResurrect: _handleResurrect,
-                  onAdRevive: _handleAdRevive,
-                  isPaidUser: IAPService.instance.isAdRemovalPurchased,
-                ),
-              // 승리 오버레이 (게임 클리어)
-              if (widget.controller.isComplete)
-                VictoryOverlay(
-                  traits: state.traits,
-                  stats: state.stats,
-                  progress: state.progress,
-                  elapsedMs: state.skillSystem.elapsedMs,
-                  onComplete: _handleVictoryComplete,
-                ),
-            ],
-          ),
-        ),
-      );
+      return _buildMobileLayout(context, state, localeKey);
     }
 
-    // 기존 데스크톱 레이아웃 (레트로 스타일)
+    return _buildDesktopLayout(context, state, localeKey);
+  }
+
+  /// 모바일 캐로셀 레이아웃
+  Widget _buildMobileLayout(
+    BuildContext context,
+    GameState state,
+    ValueKey<String> localeKey,
+  ) {
+    return NotificationOverlay(
+      key: localeKey,
+      notificationService: _notificationService,
+      child: PopScope(
+        canPop: false,
+        onPopInvokedWithResult: (didPop, result) async {
+          if (didPop) return;
+          final shouldPop = await _onPopInvoked();
+          if (shouldPop && context.mounted) {
+            await widget.controller.pause(saveOnStop: false);
+            if (context.mounted) {
+              Navigator.of(context).pop();
+            }
+          }
+        },
+        child: Stack(
+          children: [
+            MobileCarouselLayout(
+              state: state,
+              combatLogEntries: _combatLogController.entries,
+              speedMultiplier: widget.controller.loop?.speedMultiplier ?? 1,
+              onSpeedCycle: () {
+                widget.controller.loop?.cycleSpeed();
+                setState(() {});
+              },
+              onSetSpeed: (speed) {
+                widget.controller.loop?.setSpeed(speed);
+                setState(() {});
+              },
+              isPaused:
+                  !widget.controller.isRunning && _specialAnimation == null,
+              onPauseToggle: () async {
+                await widget.controller.togglePause();
+                setState(() {});
+              },
+              onSave: _saveGameState,
+              onExit: () async {
+                final shouldExit = await _onPopInvoked();
+                if (shouldExit && context.mounted) {
+                  await widget.controller.pause(saveOnStop: false);
+                  if (context.mounted) {
+                    Navigator.of(context).pop();
+                  }
+                }
+              },
+              notificationService: _notificationService,
+              specialAnimation: _specialAnimation,
+              onLanguageChange: (locale) async {
+                final navigator = Navigator.of(context);
+                await widget.controller.pause(saveOnStop: true);
+                game_l10n.setGameLocale(locale);
+                if (context.mounted) {
+                  await widget.controller.resume();
+                  navigator.pushReplacement(
+                    MaterialPageRoute<void>(
+                      builder: (_) => GamePlayScreen(
+                        controller: widget.controller,
+                        audioService: widget.audioService,
+                      ),
+                    ),
+                  );
+                }
+              },
+              onDeleteSaveAndNewGame: () async {
+                await widget.controller.pause(saveOnStop: false);
+                await widget.controller.saveManager.deleteSave();
+                if (context.mounted) {
+                  Navigator.of(context).pop();
+                }
+              },
+              bgmVolume: _audioController.bgmVolume,
+              sfxVolume: _audioController.sfxVolume,
+              onBgmVolumeChange: (volume) {
+                _audioController.setBgmVolume(volume);
+                setState(() {});
+              },
+              onSfxVolumeChange: (volume) {
+                _audioController.setSfxVolume(volume);
+                setState(() {});
+              },
+              onShowStatistics: () => _showStatisticsDialog(context),
+              onShowHelp: () => HelpDialog.show(context),
+              cheatsEnabled: widget.controller.cheatsEnabled,
+              onCheatTask: () => widget.controller.loop?.cheatCompleteTask(),
+              onCheatQuest: () => widget.controller.loop?.cheatCompleteQuest(),
+              onCheatPlot: () => widget.controller.loop?.cheatCompletePlot(),
+              onCreateTestCharacter: () async {
+                final navigator = Navigator.of(context);
+                final success = await widget.controller.createTestCharacter();
+                if (success && mounted) {
+                  navigator.popUntil((route) => route.isFirst);
+                }
+              },
+              autoReviveEndMs: widget.controller.monetization.autoReviveEndMs,
+              speedBoostEndMs: widget.controller.monetization.speedBoostEndMs,
+              isPaidUser: widget.controller.monetization.isPaidUser,
+              onSpeedBoostActivate: _handleSpeedBoost,
+              isSpeedBoostActive: widget.controller.isSpeedBoostActive,
+              adSpeedMultiplier: widget.controller.adSpeedMultiplier,
+              has2xUnlocked: widget.controller.has2xUnlocked,
+            ),
+            ..._buildOverlays(state),
+          ],
+        ),
+      ),
+    );
+  }
+
+  /// 데스크톱 3패널 레이아웃
+  Widget _buildDesktopLayout(
+    BuildContext context,
+    GameState state,
+    ValueKey<String> localeKey,
+  ) {
     return NotificationOverlay(
       key: localeKey,
       notificationService: _notificationService,
@@ -710,135 +695,16 @@ class _GamePlayScreenState extends State<GamePlayScreen>
             }
           }
         },
-        // 웹/데스크톱 키보드 단축키 지원
         child: Focus(
           autofocus: true,
           onKeyEvent: (node, event) => _handleKeyboardShortcut(event, context),
           child: Scaffold(
             backgroundColor: RetroColors.deepBrown,
-            appBar: AppBar(
-              backgroundColor: RetroColors.darkBrown,
-              title: Text(
-                L10n.of(context).progressQuestTitle(state.traits.name),
-                style: const TextStyle(
-                  fontFamily: 'PressStart2P',
-                  fontSize: 15,
-                  color: RetroColors.gold,
-                ),
-              ),
-              actions: [
-                // 치트 버튼 (디버그용)
-                if (widget.controller.cheatsEnabled) ...[
-                  IconButton(
-                    icon: const Text('L+1'),
-                    tooltip: L10n.of(context).levelUp,
-                    onPressed: () =>
-                        widget.controller.loop?.cheatCompleteTask(),
-                  ),
-                  IconButton(
-                    icon: const Text('Q!'),
-                    tooltip: L10n.of(context).completeQuest,
-                    onPressed: () =>
-                        widget.controller.loop?.cheatCompleteQuest(),
-                  ),
-                  IconButton(
-                    icon: const Text('P!'),
-                    tooltip: L10n.of(context).completePlot,
-                    onPressed: () =>
-                        widget.controller.loop?.cheatCompletePlot(),
-                  ),
-                ],
-                // 통계 버튼
-                IconButton(
-                  icon: const Icon(Icons.bar_chart),
-                  tooltip: game_l10n.uiStatistics,
-                  onPressed: () => _showStatisticsDialog(context),
-                ),
-                // 도움말 버튼
-                IconButton(
-                  icon: const Icon(Icons.help_outline),
-                  tooltip: game_l10n.uiHelp,
-                  onPressed: () => HelpDialog.show(context),
-                ),
-                // 설정 버튼
-                IconButton(
-                  icon: const Icon(Icons.settings),
-                  tooltip: game_l10n.uiSettings,
-                  onPressed: () => _showSettingsScreen(context),
-                ),
-              ],
-            ),
+            appBar: _buildDesktopAppBar(context, state),
             body: Stack(
               children: [
-                // 메인 게임 UI
-                Column(
-                  children: [
-                    // 상단: ASCII 애니메이션 + Task Progress (Phase 7: 고정 4색 팔레트)
-                    TaskProgressPanel(
-                      progress: state.progress,
-                      speedMultiplier:
-                          widget.controller.loop?.speedMultiplier ?? 1,
-                      onSpeedCycle: () {
-                        widget.controller.loop?.cycleSpeed();
-                        setState(() {});
-                      },
-                      // 특수 애니메이션 중에는 일시정지 상태로 표시하지 않음
-                      isPaused:
-                          !widget.controller.isRunning &&
-                          _specialAnimation == null,
-                      onPauseToggle: () async {
-                        await widget.controller.togglePause();
-                        setState(() {});
-                      },
-                      specialAnimation: _specialAnimation,
-                      weaponName: state.equipment.weapon,
-                      shieldName: state.equipment.shield,
-                      characterLevel: state.traits.level,
-                      monsterLevel: state.progress.currentTask.monsterLevel,
-                      monsterGrade: state.progress.currentTask.monsterGrade,
-                      monsterSize: state.progress.currentTask.monsterSize,
-                      latestCombatEvent:
-                          state.progress.currentCombat?.recentEvents.lastOrNull,
-                      raceId: state.traits.raceId,
-                    ),
-
-                    // 메인 3패널 영역
-                    Expanded(
-                      child: Row(
-                        crossAxisAlignment: CrossAxisAlignment.stretch,
-                        children: [
-                          // 좌측 패널: Character Sheet
-                          Expanded(flex: 2, child: _buildCharacterPanel(state)),
-
-                          // 중앙 패널: Equipment/Inventory
-                          Expanded(flex: 3, child: _buildEquipmentPanel(state)),
-
-                          // 우측 패널: Plot/Quest
-                          Expanded(flex: 2, child: _buildQuestPanel(state)),
-                        ],
-                      ),
-                    ),
-                  ],
-                ),
-
-                // 사망 오버레이
-                if (state.isDead && state.deathInfo != null)
-                  DeathOverlay(
-                    deathInfo: state.deathInfo!,
-                    traits: state.traits,
-                    onResurrect: _handleResurrect,
-                    onAdRevive: _handleAdRevive,
-                    isPaidUser: IAPService.instance.isAdRemovalPurchased,
-                  ),
-                // 승리 오버레이 (게임 클리어)
-                if (widget.controller.isComplete)
-                  VictoryOverlay(
-                    traits: state.traits,
-                    stats: state.stats,
-                    progress: state.progress,
-                    elapsedMs: state.skillSystem.elapsedMs,
-                    onComplete: _handleVictoryComplete,
-                  ),
+                _buildDesktopMainContent(state),
+                ..._buildOverlays(state),
               ],
             ),
           ),
@@ -847,6 +713,118 @@ class _GamePlayScreenState extends State<GamePlayScreen>
     );
   }
 
+  /// 데스크톱 앱바
+  PreferredSizeWidget _buildDesktopAppBar(BuildContext context, GameState state) {
+    return AppBar(
+      backgroundColor: RetroColors.darkBrown,
+      title: Text(
+        L10n.of(context).progressQuestTitle(state.traits.name),
+        style: const TextStyle(
+          fontFamily: 'PressStart2P',
+          fontSize: 15,
+          color: RetroColors.gold,
+        ),
+      ),
+      actions: [
+        if (widget.controller.cheatsEnabled) ...[
+          IconButton(
+            icon: const Text('L+1'),
+            tooltip: L10n.of(context).levelUp,
+            onPressed: () => widget.controller.loop?.cheatCompleteTask(),
+          ),
+          IconButton(
+            icon: const Text('Q!'),
+            tooltip: L10n.of(context).completeQuest,
+            onPressed: () => widget.controller.loop?.cheatCompleteQuest(),
+          ),
+          IconButton(
+            icon: const Text('P!'),
+            tooltip: L10n.of(context).completePlot,
+            onPressed: () => widget.controller.loop?.cheatCompletePlot(),
+          ),
+        ],
+        IconButton(
+          icon: const Icon(Icons.bar_chart),
+          tooltip: game_l10n.uiStatistics,
+          onPressed: () => _showStatisticsDialog(context),
+        ),
+        IconButton(
+          icon: const Icon(Icons.help_outline),
+          tooltip: game_l10n.uiHelp,
+          onPressed: () => HelpDialog.show(context),
+        ),
+        IconButton(
+          icon: const Icon(Icons.settings),
+          tooltip: game_l10n.uiSettings,
+          onPressed: () => _showSettingsScreen(context),
+        ),
+      ],
+    );
+  }
+
+  /// 데스크톱 메인 컨텐츠 (3패널)
+  Widget _buildDesktopMainContent(GameState state) {
+    return Column(
+      children: [
+        TaskProgressPanel(
+          progress: state.progress,
+          speedMultiplier: widget.controller.loop?.speedMultiplier ?? 1,
+          onSpeedCycle: () {
+            widget.controller.loop?.cycleSpeed();
+            setState(() {});
+          },
+          isPaused: !widget.controller.isRunning && _specialAnimation == null,
+          onPauseToggle: () async {
+            await widget.controller.togglePause();
+            setState(() {});
+          },
+          specialAnimation: _specialAnimation,
+          weaponName: state.equipment.weapon,
+          shieldName: state.equipment.shield,
+          characterLevel: state.traits.level,
+          monsterLevel: state.progress.currentTask.monsterLevel,
+          monsterGrade: state.progress.currentTask.monsterGrade,
+          monsterSize: state.progress.currentTask.monsterSize,
+          latestCombatEvent:
+              state.progress.currentCombat?.recentEvents.lastOrNull,
+          raceId: state.traits.raceId,
+        ),
+        Expanded(
+          child: Row(
+            crossAxisAlignment: CrossAxisAlignment.stretch,
+            children: [
+              Expanded(flex: 2, child: _buildCharacterPanel(state)),
+              Expanded(flex: 3, child: _buildEquipmentPanel(state)),
+              Expanded(flex: 2, child: _buildQuestPanel(state)),
+            ],
+          ),
+        ),
+      ],
+    );
+  }
+
+  /// 공통 오버레이 (사망, 승리)
+  List<Widget> _buildOverlays(GameState state) {
+    return [
+      if (state.isDead && state.deathInfo != null)
+        DeathOverlay(
+          deathInfo: state.deathInfo!,
+          traits: state.traits,
+          onResurrect: _handleResurrect,
+          onAdRevive: _handleAdRevive,
+          isPaidUser: IAPService.instance.isAdRemovalPurchased,
+        ),
+      if (widget.controller.isComplete)
+        VictoryOverlay(
+          traits: state.traits,
+          stats: state.stats,
+          progress: state.progress,
+          elapsedMs: state.skillSystem.elapsedMs,
+          onComplete: _handleVictoryComplete,
+        ),
+    ];
+  }
+
   /// 키보드 단축키 핸들러 (웹/데스크톱)
   /// Space: 일시정지/재개, S: 속도 변경, H: 도움말, Esc: 설정
   KeyEventResult _handleKeyboardShortcut(KeyEvent event, BuildContext context) {
diff --git a/lib/src/features/game/widgets/ascii_animation_card.dart b/lib/src/features/game/widgets/ascii_animation_card.dart
index 4be14c5..46f114c 100644
--- a/lib/src/features/game/widgets/ascii_animation_card.dart
+++ b/lib/src/features/game/widgets/ascii_animation_card.dart
@@ -785,7 +785,9 @@ class _AsciiAnimationCardState extends State<AsciiAnimationCard> {
               child: AsciiDisintegrateWidget(
                 characterLines: _deathAnimationMonsterLines!,
                 duration: const Duration(milliseconds: 800),
-                textColor: widget.monsterGrade?.displayColor,
+                textColor: widget.monsterGrade?.displayColorCode != null
+                    ? Color(widget.monsterGrade!.displayColorCode!)
+                    : null,
                 onComplete: _onDeathAnimationComplete,
               ),
             ),
diff --git a/lib/src/features/game/widgets/enhanced_animation_panel.dart b/lib/src/features/game/widgets/enhanced_animation_panel.dart
index 3412c51..0e907b7 100644
--- a/lib/src/features/game/widgets/enhanced_animation_panel.dart
+++ b/lib/src/features/game/widgets/enhanced_animation_panel.dart
@@ -756,9 +756,10 @@ class _EnhancedAnimationPanelState extends State<EnhancedAnimationPanel>
     final gradePrefix = (isKillTask && grade != null)
         ? grade.displayPrefix
         : '';
-    final gradeColor = (isKillTask && grade != null)
-        ? grade.displayColor
+    final gradeColorCode = (isKillTask && grade != null)
+        ? grade.displayColorCode
         : null;
+    final gradeColor = gradeColorCode != null ? Color(gradeColorCode) : null;
 
     return Row(
       crossAxisAlignment: CrossAxisAlignment.center,
diff --git a/lib/src/features/game/widgets/task_progress_panel.dart b/lib/src/features/game/widgets/task_progress_panel.dart
index 47184a6..0cc56ab 100644
--- a/lib/src/features/game/widgets/task_progress_panel.dart
+++ b/lib/src/features/game/widgets/task_progress_panel.dart
@@ -169,9 +169,10 @@ class TaskProgressPanel extends StatelessWidget {
     final gradePrefix = (isKillTask && grade != null)
         ? grade.displayPrefix
         : '';
-    final gradeColor = (isKillTask && grade != null)
-        ? grade.displayColor
+    final gradeColorCode = (isKillTask && grade != null)
+        ? grade.displayColorCode
         : null;
+    final gradeColor = gradeColorCode != null ? Color(gradeColorCode) : null;
 
     return Text.rich(
       TextSpan(
diff --git a/lib/src/features/settings/settings_screen.dart b/lib/src/features/settings/settings_screen.dart
index 2f033d4..3bfe1e9 100644
--- a/lib/src/features/settings/settings_screen.dart
+++ b/lib/src/features/settings/settings_screen.dart
@@ -2,6 +2,7 @@ import 'package:flutter/foundation.dart';
 import 'package:flutter/material.dart';
 
 import 'package:asciineverdie/data/game_text_l10n.dart' as game_l10n;
+import 'package:asciineverdie/l10n/app_localizations.dart';
 import 'package:asciineverdie/src/core/engine/debug_settings_service.dart';
 import 'package:asciineverdie/src/core/storage/settings_repository.dart';
 import 'package:asciineverdie/src/shared/retro_colors.dart';
@@ -145,7 +146,7 @@ class _SettingsScreenState extends State<SettingsScreen> {
                 // 디버그 섹션 (디버그 모드에서만 표시)
                 if (kDebugMode) ...[
                   const SizedBox(height: 16),
-                  const _RetroSectionTitle(title: 'DEBUG'),
+                  _RetroSectionTitle(title: L10n.of(context).debugTitle),
                   const SizedBox(height: 8),
                   _buildDebugSection(context),
                 ],
@@ -308,7 +309,7 @@ class _SettingsScreenState extends State<SettingsScreen> {
               ),
               const SizedBox(width: 8),
               Text(
-                'DEVELOPER TOOLS',
+                L10n.of(context).debugDeveloperTools,
                 style: TextStyle(
                   fontFamily: 'PressStart2P',
                   fontSize: 10,
@@ -322,8 +323,8 @@ class _SettingsScreenState extends State<SettingsScreen> {
           // IAP 시뮬레이션 토글
           _RetroDebugToggle(
             icon: Icons.shopping_cart,
-            label: 'IAP PURCHASED',
-            description: 'ON: 유료 유저로 동작 (광고 제거)',
+            label: L10n.of(context).debugIapPurchased,
+            description: L10n.of(context).debugIapPurchasedDesc,
             value: _debugIapSimulated,
             onChanged: (value) async {
               await DebugSettingsService.instance.setIapSimulated(value);
@@ -346,7 +347,7 @@ class _SettingsScreenState extends State<SettingsScreen> {
           // 테스트 캐릭터 생성
           if (widget.onCreateTestCharacter != null) ...[
             Text(
-              '현재 캐릭터를 레벨 100으로 수정하여\n명예의 전당에 등록합니다.',
+              L10n.of(context).debugTestCharacterDesc,
               style: TextStyle(
                 fontFamily: 'PressStart2P',
                 fontSize: 7,
@@ -358,7 +359,7 @@ class _SettingsScreenState extends State<SettingsScreen> {
             SizedBox(
               width: double.infinity,
               child: RetroTextButton(
-                text: 'CREATE TEST CHARACTER',
+                text: L10n.of(context).debugCreateTestCharacter,
                 icon: Icons.science,
                 onPressed: _handleCreateTestCharacter,
               ),
@@ -388,7 +389,7 @@ class _SettingsScreenState extends State<SettingsScreen> {
                 crossAxisAlignment: CrossAxisAlignment.start,
                 children: [
                   Text(
-                    'OFFLINE HOURS',
+                    L10n.of(context).debugOfflineHours,
                     style: TextStyle(
                       fontFamily: 'PressStart2P',
                       fontSize: 8,
@@ -397,7 +398,7 @@ class _SettingsScreenState extends State<SettingsScreen> {
                   ),
                   const SizedBox(height: 2),
                   Text(
-                    '복귀 보상 테스트 (재시작 시 적용)',
+                    L10n.of(context).debugOfflineHoursDesc,
                     style: TextStyle(
                       fontFamily: 'PressStart2P',
                       fontSize: 6,
@@ -435,14 +436,10 @@ class _SettingsScreenState extends State<SettingsScreen> {
     final confirmed = await showDialog<bool>(
       context: context,
       builder: (context) => _RetroConfirmDialog(
-        title: 'CREATE TEST CHARACTER?',
-        message:
-            '현재 캐릭터가 레벨 100으로 변환되어\n'
-            '명예의 전당에 등록됩니다.\n\n'
-            '⚠️ 현재 세이브 파일이 삭제됩니다.\n'
-            '이 작업은 되돌릴 수 없습니다.',
-        confirmText: 'CREATE',
-        cancelText: 'CANCEL',
+        title: L10n.of(context).debugCreateTestCharacterTitle,
+        message: L10n.of(context).debugCreateTestCharacterMessage,
+        confirmText: L10n.of(context).createButton,
+        cancelText: L10n.of(context).cancel.toUpperCase(),
       ),
     );