I am really glad that you liked the level design! It was actually the only reason why I personally wanted to join this jam as I never did level design before, so I am glad that we got that right. Also reg. the atmosphere.
Reg. the rebirth theme... yeah, not great implementation. The idea was that each new skill turns the player a bit more into a monster just for the sake of being the hero of the story. The end of the game is supposed to make it a bit more clear, I guess, but still not great. Next jam goal: work on "story-telling through mechanics" skills.
Thanks for playing and your feedback! :)