Very impressive how you executed the switching bodies idea. It really made me feel cool to freeze time and appearing on the other side of the screen.
The art was great, soundtrack is really good, and controls felt solid!
The only downsides in my opinion is how little characters there are, and how they were in comparison to the others. The pyro felt incredibly slow. And I know he has that enormous tank on his back, so it makes sense, but I personally feel his speed pushes me away from controlling him. Other enemies were great though!
But that's my thoughts, so don't let this comment pull you away from this game.