Dude.
This game is awesome. Hard as hell, but awesome.
I pretty much like everything about it except you don't have instruction as far as I could see. The game started with him running and I didn't know what to do the first time as nothing was there. Waiting the second time, I saw the arrows as such that I needed to jam to.
Very cool game, man. Great graphics, funny endings when you die and you kept a cool beat.