The take on the theme is pretty interesting. As some others have said, some sound effects would be nice. I don't think the health rewinding was working for me when I pressed Q, but idk if I just didn't get how it worked haha. The music is really good (a small change would be to not make it restart every time the screen changes). The game is pretty hard and needs some polishing but with some additions like sound effects, particles etc it could look pretty good!