great atmosphere, interesting idea, and while I did have fun playing it (got to 1000 points!) I feel like it could use a few more "gimmicks", like maybe some things that make you run faster/slower/bigger/smaller, and of course more levels (which I didn't expect for a game jam game).
Did you make the falling down and getting back up animation yourself? I really liked it! Also: good job on being "invisible" for a bit after being hit. Once when I was getting up something else hit me but thankfully it didn't count.