Really great game, love the concept and it also feels really nice to play. The only thing I was missing was some hit-feedback and maybe even the player's health bar.
But it was a lot of fun none the less. Keep it up!
Thanks for the feedback! It's pretty much what I gathered on my own but I didn't really have time for that last bit of polishing. Perchance I can fix it up after the jam, though I think I'm gonna focus on adding this boss to Ruptured!