A really nice, smooth and tight game loop. Really enjoyable platforming.
I got quite concerned after the first floor as I was down to like 30 life and start to panic, so I am eternally grateful you included the life on kill upgrade.
I love that you made everything yourselves and everything is really charming. I think it's the perfect length of a jam too, doesn't outstay its welcome in the slightest, and there's more content for people to go back and get the other ending. The credits are nice too!
Many thanks!