diff --git a/Assets/Scripts/Skills/Effectors/Projectile.cs b/Assets/Scripts/Skills/Effectors/Projectile.cs
index b3b4388..6347f02 100644
--- a/Assets/Scripts/Skills/Effectors/Projectile.cs
+++ b/Assets/Scripts/Skills/Effectors/Projectile.cs
@@ -58,12 +58,25 @@ namespace EerieVillage.Skills.Effectors
             Invoke(nameof(SelfDestruct), _lifetime);
         }
 
+        // BT12-Dev 2026-05-10 (PD #2 fix) — Wall Layer Mask (Layer 0 Default·Ground + Layer 16 Foreground·발판)
+        // Tilemap = Static collider·Projectile = Trigger·둘 다 Rigidbody2D 부재 → OnTriggerEnter2D 발화 X 영역 영역.
+        // → Update 영역 Physics2D.OverlapPoint 영역 Wall Layer 영역 영역 영역 SelfDestruct (영역 영역 영역 영역).
+        protected static readonly int WallLayerMask = (1 << 0) | (1 << 16);
+
         protected virtual void Update()
         {
             transform.position += (Vector3)(_direction * _speed * Time.deltaTime);
 
             // BT12-Dev 2026-05-10 (PD #1) — 거리 제한 영역 영역 SelfDestruct
             if (Vector2.Distance(transform.position, _spawnPosition) >= _maxRange)
+            {
+                SelfDestruct();
+                return;
+            }
+
+            // BT12-Dev 2026-05-10 (PD #2 fix) — Wall 영역 OverlapPoint 영역 검출 (OnTriggerEnter2D 영역 Static collider 영역 발화 X)
+            var wallHit = Physics2D.OverlapPoint(transform.position, WallLayerMask);
+            if (wallHit != null)
             {
                 SelfDestruct();
             }