I like the sound of having intermediate levels and the power-ups could be an interesting addition. I'd personally think they'd be best as a collectable item for just the rooms they are needed in and probably in just the later levels. I think another idea which could be good for a standard control would be to turn out of the wall jump so when you're sticking to the wall you can drop straight down. If I'm honest, it's the only game I haven't managed to complete in this jam but in no way is that a bad thing, I really enjoyed the challenges and I feel very close to being able to do them. I really hope you continue developing the game because it's awesome