Very well done!
Super like the fact that you flipped the whole concept of platformers, mainly the fact that you need to go left.
The mechanic itself of bumping into the enemies is indeed cool, but it also feels clunky, maybe you need to soften it a bit so you can grab them even if you are a bit above or below them.
Also, color palette is important for the eye.
Anyways, again, well done!