Have to share my opinion. Game looks great, but the execution and the demo have some critical flaws and it's shame that this is the only representation of the game.
What's up with the Shield bar? I can only block once anyway. Took me a while (a minute or so) to realize I have to wait till it fills up to use it again (mostly because game doesn't tell me and introduced me to another feature already).
Player doesn't know how much health the boss has left.
Camera sometimes snaps, looks like gimbal lock.
The menu is confusing, player doesn't know on which button he is if only 2 options are available.
You can't skip the intro with escape/space/enter/start button.
Music got repetitive pretty fast like that.
Really tried to give the game some chances, but the above critics made me give up pretty fast. Again, I feel it's a shame, because the game looks like it has a lot of potential, but kids are spoiled these days and the demo should be smooth as silk.