LOVE the mechanic of the graphics changing as your health goes down. It looks amazing and is a fantastic surprise the first time you experience it. Actually makes me want to die to just to see the game in all of its different modes. Just an absolutely killer idea. Speaking of killer, this is really hard! But I'll for sure be playing this game until I can beat it. Great work.
BTW, my submission is a first-person shooter game as well. ;)