Very nice platformer. I found it a bit tricky, maybe I'm just clumsy... I'll try to put a bit more time into it, I like the challenge!
The idea of possessing enemies is great! Since I didn't get that far, I don't know if you exploit this a lot or not, but I totally would.
My only 'buts' are the lack of audio, and that it's not really connected to the theme (at least not the bit that I've played). Still, good idea, and well executed.