Well done! I had a similar idea for the jam but I never got my reincarnation engine quite working right so it's interesting for me to see something like this actually working.
It's a bit hard to criticise because I think the levels not being finished is the main thing wrong with the game. Personally I'm not a fan of how slow the reincarnation process is. I think a quicker reincarnation would be more fun and flow better. If you continue working on this I think I'd want to see more switching between characters and environments that can't just be traversed by a single character.