Final i think

levels/Campaign/Level 3/Level_3.tscn

@@ -157,6 +157,6 @@ color = Color( 0.564706, 0.564706, 0.564706, 1 )
 
 [node name="Ogre6" parent="." instance=ExtResource( 7 )]
 position = Vector2( 334, 85 )
-[connection signal="on" from="Lever" to="TileMapAppearing" method="_on_Lever_on"]
 [connection signal="on" from="Lever" to="TileMapDisapearing" method="_on_Lever_on"]
+[connection signal="on" from="Lever" to="TileMapAppearing" method="_on_Lever_on"]
 [connection signal="body_entered" from="Area2D" to="Area2D" method="_on_Area2D_body_entered"]

levels/Campaign/Level 4/Level_4.tscn

@@ -18,8 +18,8 @@ extents = Vector2( 1535, 10 )
 
 [node name="Door" parent="." instance=ExtResource( 10 )]
 position = Vector2( 1590, 145 )
-next_scene = "res://levels/Campaign/Credits/Credits.tscn"
-text = "Credits. Thank you. "
+next_scene = "res://levels/Campaign/Level 5/Level_5.tscn"
+text = "Final Stage"
 
 [node name="door" type="Sprite" parent="."]
 position = Vector2( 16.0554, 160.966 )
@@ -50,7 +50,6 @@ script = ExtResource( 5 )
 
 [node name="Lever" parent="." instance=ExtResource( 4 )]
 position = Vector2( 844, 169 )
-lock = false
 
 [node name="Enemies" type="Node" parent="."]
 

levels/Campaign/Level 5/Enemies.gd

@@ -3,6 +3,5 @@ extends Node
 signal fight_done
 
 func _process(delta):
-	print(get_children())
 	if get_child_count() < 2:
 		emit_signal("fight_done")