I actually enjoyed watching the video.  The music was good, the voices were decent.  This is the sort of game I personally wouldn't play, but would enjoy watching others play.  Odd habit of mine watching others play games.  Anyways, my only critic is this: I noticed each time an enemy was defeated the action would slow down so as to emphasise the 'final move' so to say.  I think the effect loses some of its appeal after awhile.  I would recommend using it more sparingly, perhaps only when a new finish move is conducted, or when a major enemy is defeated.  Otherwise, pretty neat.