Great music but I would prefer to have some variation, the game has some improvement to be done: collision can be better with the walls, the difference between hand drawn and pixel art, the enemies visual doesn't match with the lore, we should have more mechanics (trap, monster that grabs the heart and we need to free him, magnet that pulls the player). Of course, the game has a great concept but can be more developed. If it was your first game, good job, you have the loop of the game and tried to exploit the mechanics as much as you can. The balance is great, a good idea to shut the door until we learn how to interact with object.