Amazing! Only feedback I can give for this game would be more similar to a critique of a full game release, than of game jam.
I got to wave 36, some new enemies then have a tendency to get stuck outside the screen, and I couldn't progress further, as I couldn't kill whatever was off-screen.
The wave 30 boss is too long, I'd be happier if mistakes that late were punished more, as opposed to the fights lasting 10 minutes.
But brilliant game 10/10. Attention to detail with your character wiping the stains off the screen as they move produced dopamine for me. Hope you do well, best of luck in the jam! :D