diff --git a/Assets/Scripts/Mechanics/GameOptimizer.cs b/Assets/Scripts/Mechanics/GameOptimizer.cs
index 6e62677..836f088 100644
--- a/Assets/Scripts/Mechanics/GameOptimizer.cs
+++ b/Assets/Scripts/Mechanics/GameOptimizer.cs
@@ -69,12 +69,15 @@ namespace Platformer.Mechanics
                 applied++;
             }
 
-            // 2. PD Foreground = 가림막 시각만 (TilemapCollider2D 제거 → 충돌 X).
+            // 2. PD Foreground = 가림막 시각 + TilemapCollider 부착 (BT82 정정·PD 보고: Enemy 떨어짐).
+            //    이전 BT66 R2의 Object.Destroy 폐기 — Player는 Drop-Through 패턴 영역에서 통과·착지 분기 / Enemy는 충돌 ON.
+            //    Layer 16 강제 (AutoForeground와 동일·Drop-Through 패턴 적용).
             var pdForeground = GameObject.Find("Foreground");
             if (pdForeground != null)
             {
+                pdForeground.layer = 16;
                 var pdFgTc = pdForeground.GetComponent<UnityEngine.Tilemaps.TilemapCollider2D>();
-                if (pdFgTc != null) Object.Destroy(pdFgTc);
+                if (pdFgTc == null) pdFgTc = pdForeground.AddComponent<UnityEngine.Tilemaps.TilemapCollider2D>();
             }
 
             // 3. AutoForeground GameObject (Grid 자식·신규) — 자동 분류 발판 전용.