Amazing!
Simple, yet complex with a decent amount of levels. Single mechanic, but with many options and interesting level design and hard enough to use to make it captivating nonetheless. Simplistic art, yet so great. I had a lot of fun with this game, messing around with the enemies, trying to be good at the mechanic to feel like I'm speedrunning the game (though I failed). The only thing left would be some sound and this would be an A+!
I found a bug (or was it intended?) where you could pull on an enemy and somewhat ride it for insane mobility, but I couldn't do it consistently and good enough to use it and fly through the levels, though it would be amazing if someone manages for an insane speedrun. Obviously pushing things away can also propel you away which could lead to crazy scenarios!
Overall, amazing job! :)