Looks like fun game but clearly has its limitations, since the movement is only for the upper body. I really like the "create your own moves" idea but since its basically "do your own kind of punch" I doubt the creative control is enough to make it really work. That said Id love to try it!
I played the tech demo but, you can't attack (I even looked into the config files), just move around and play with the extremely buggy bracket keys to make your robots model out of line with the actual physics frame haha.