diff --git a/scenes/level2.tscn b/scenes/level2.tscn
index ef7c047..1eae055 100644
--- a/scenes/level2.tscn
+++ b/scenes/level2.tscn
@@ -168,7 +168,7 @@ tile_set = ExtResource("9_nflru")
 [node name="TerrainDetailsA" type="TileMapLayer" parent="Level/TerrainTileMaps" unique_id=1513560262]
 z_index = 1
 position = Vector2(9, 9)
-tile_map_data = PackedByteArray("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")
+tile_map_data = PackedByteArray("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")
 tile_set = ExtResource("9_nflru")
 
 [node name="TerrainDetailsB" type="TileMapLayer" parent="Level/TerrainTileMaps" unique_id=478648603]
@@ -250,7 +250,7 @@ position = Vector2(288, 37)
 
 [node name="CoinGoldRound_01" parent="Level/PrefabInstances/Collectibles" unique_id=926105584 instance=ExtResource("15_odav0")]
 z_index = 5
-position = Vector2(79, 56)
+position = Vector2(437, 127)
 
 [node name="CoinGoldRound_02" parent="Level/PrefabInstances/Collectibles" unique_id=1674416025 instance=ExtResource("15_odav0")]
 z_index = 5
diff --git a/scenes/level3.tscn b/scenes/level3.tscn
index 0d6d83a..48d524f 100644
--- a/scenes/level3.tscn
+++ b/scenes/level3.tscn
@@ -18,6 +18,7 @@
 [ext_resource type="PackedScene" path="res://scenes/prefabs/collectibles/key_gold.tscn" id="18_kvrlk"]
 [ext_resource type="PackedScene" path="res://scenes/prefabs/collectibles/diamond.tscn" id="19_85fmh"]
 [ext_resource type="PackedScene" path="res://scenes/prefabs/enemies/bullet_rain.tscn" id="20_rain"]
+[ext_resource type="PackedScene" path="res://scenes/prefabs/enemies/walker.tscn" id="21_walker"]
 
 [node name="Main" type="Node2D" unique_id=2061129075]
 
@@ -211,6 +212,17 @@ position = Vector2(331, 216)
 [node name="BulletRain_01" parent="Level/PrefabInstances/Enemies" unique_id=1814844955 instance=ExtResource("20_rain")]
 position = Vector2(234, 0)
 
+[node name="Walker_01" parent="Level/PrefabInstances/Enemies" instance=ExtResource("21_walker")]
+position = Vector2(216, 216)
+
+[node name="Walker_02" parent="Level/PrefabInstances/Enemies" instance=ExtResource("21_walker")]
+position = Vector2(306, 216)
+start_direction = 1
+
+[node name="Walker_03" parent="Level/PrefabInstances/Enemies" instance=ExtResource("21_walker")]
+position = Vector2(90, 198)
+start_direction = 1
+
 [node name="Interactables" type="Node2D" parent="Level/PrefabInstances" unique_id=769532488]
 
 [node name="SpringRed_01" parent="Level/PrefabInstances/Interactables" unique_id=34192139 instance=ExtResource("15_usk20")]
diff --git a/scripts/bullet_rain.gd b/scripts/bullet_rain.gd
index 149662b..657d7c4 100644
--- a/scripts/bullet_rain.gd
+++ b/scripts/bullet_rain.gd
@@ -9,9 +9,9 @@ const BULLET := preload("res://scenes/prefabs/enemies/bullet.tscn")
 
 @export var enabled: bool = true
 ## 平均多少秒落一颗（数值越大越稀疏）
-@export var interval: float = 0.4
+@export var interval: float = 0.2
 ## 间隔随机浮动范围（0 = 完全固定节奏）
-@export var interval_jitter: float = 0.25
+@export var interval_jitter: float = 0.12
 ## 开场后第一次落下的延迟
 @export var start_delay: float = 1.0
 ## 生成高度（相对自己的 y，负数 = 从屏幕上方外面）