Added pause capability to all levels, added music to Level 5, added a simple chasing AI to the glowing ghosts, and optimized the Main Menu scene

Enemies/Glowing Ghost.gd

@@ -0,0 +1,27 @@
+extends KinematicBody2D
+
+const SPEED: int = 50
+
+var player: KinematicBody2D = null
+var velocity: Vector2 = Vector2.ZERO
+
+
+func _physics_process(_delta: float) -> void:
+    velocity = Vector2.ZERO
+
+    if player:
+        velocity = position.direction_to(player.position).normalized() * SPEED
+
+    velocity = move_and_slide(velocity)
+    return
+
+
+func _on_player_detector_area_entered(area: Area2D) -> void:
+    if area.get_parent().name == 'Player':
+        player = area.get_parent()
+    return
+
+
+func _on_player_detector_area_exited(_area: Area2D):
+    player = null
+    return