This is a good game. I think its strongest point is probably how straightforward the gameplay is. I like this aerial shot you use. I also appreciate how you just have monsters come after you over and over. It's a tad different than the standard zombie stuff. Not that I wouldn't always want to play a zombie game.
It helps that the music is really good. I'm starting to notice that more in games. I liked how it was not just the same mutant. There were also a lot of interesting things you could collect. This was a good game.