Level design is Wonderful and clever. I think the platforming could be a little bit more fine-tuned but that's only downside.

Level design is top-notch.

Critters should probably shake a little bit before they flip themselves up.

Though frustrating at some points (third stage) it was pretty fun and cute. I would recommend having save points always be in the same room you die in for less frustration with the exception of multiple room puzzles.

Very well made. I didn't play all the way through, but I think you did a fantastic job of illustrating how each new mechanic works. Level design flowed well. Good job.

Your level design is great!

One thing I noticed the first time I played this - I thought the enemy spawners were actually something I should try to grab (since they look a bit similar to the pantsu/spawn-point glowy things and I didn't realise they spawned enemies). Maybe tone down the effect on the spawner or make it look more evil-ish.