Very nice.
I'm rather glad that I didn't have the volume on, though. I absolutely HATE when those zombie heads pop up in half of every animation on the internet--they're more prolific than Chuck Norris himself--but in this case, it worked wonders. I was confused at first and thought that I had died or something, but then realized that it was just a random occurrence. The game actually didn't scare me, but I'll admit that even the soundless head startled me once.
As for the whole Nazombi thing, I don't see why everyone's offended. If Medal of Honor can get away with killing Nazis and Resident Evil can get away with killing zombies, then why not a dash of both? I for one thought the idea was, if not absolutely fresh and new, at least entertaining.
Gameplay--nicely done. I don't get what took everyone so long about the first level, though. I died once and then realized it. It's a solid platformer, but one thing bothered me. I think that taking such heavy damage from short falls is a definite minus for the game. Also, the ability to shoot while jumping would have been appreciated.
All in all, it was a Castlevania-esque shooting spree. I liked it. Good show.