I did enjoy this for the most part, but it was still pretty hard. You know, with the touching your own blood thing. The second level was definitely easier than the first. Still, it's quite a unique idea. I like the music too. It almost sounds like something from "Madness Combat".
That always has great music. Even for most games, this got hard fast. You'd have to really train with it. It's certainly something I would recommend. I never let simplicity fool me!