I watched a stream of this last night. Some of the mechanics seemed neat, but there was nothing there that made me want to play it. It seemed a little too easy to be any real fun. We're talking boss fights that are over in 15 seconds. You can just mash the punch button and tank any hits coming at you, and basically can't lose.
The destructible environments are an interesting concept, but it looked ike a patchwork of testing levels that were ok'ed and slightly upgraded visually.
The chat kept calling it a baby game over and over, and I pretty much agreed with the assessment. From what I saw, it definitely wouldn't be a game for me, but a 7 year old would probably have fun.