What a fun game concept! It looks so polished great work! Obviously needs some narrative reason to do what you're doing, or some genuine challenge, but it's fun!
Edit- the other thing I forgot to say is that the camera needs work. Not only is it not nice to be in the position it is in, it should be further up above the shoulder, but it also makes the scene go blurry at some parts I noticed near the end when I had destroyed most things.