Very nice! Pretty good completion/polish for a jam, and of course interesting puzzly gameplay. A tiny bit of polish would make this a great (full release) game. The puzzles are a good challenge, but the difficulty doesn't ramp too quickly.
I got stuck on the level with the blob almost directly left of spawn; not sure if that's a difficulty spike or if I'm just being dumb.
I agree with another commenter that adding more hits before death would be nice to make it just a tad more forgiving.