Pretty neat idea. I especially enjoyed the visuals! The glitch effect is dope.

I really like the idea of the game, I think i played it through but the end is just a violette screen? That was the only thing that seemed really off to me. Also the switching shadow places and with enemies wasn't really needed for anything except jumping over holes , I am sure there is some more potential in its uses, maybe add a small damage explosion when switching for the first time or something like that. 

The art is really cool, the feeling of the game as well. 

I don't know if I like the one shot kill range enemies that shoot really fast as I sometimes got stuck in an infinite loop of dying and dying again because they just shot me instantly when I was back alive.

I am very glad that respawning is that generous because if it weren't, I wouldn't have made it till the end.

You should definitely continue on this!