good idea but falls flat on stupid difficulty
fun concept but falls flat on thinking that high difficulty = good game, the game would have benefited from a life system and at least one or two health items around a boss area, even then I could give it a 5 at most as it commits a to grave of a sin to let me give it more...
a boss with a unblockable, barely unavoidable attack that hurts you whatever you do and robs you of any control, it´s just cheap to the point it´s childish to have it in a game.