fun, i get that zombie vibe....
i like the music it goes very well with the title. however one problem is the fact that it seems a little more like a loop than anything else, and a fairly short one at that. if you had added a few more instruments, i.e. guitar, cymbals, i feel you could have really pulled a more diverse sound.
also, when i hear this, i imagine more of that one scene in every zombie movie when you see the mass of zombies that go on into the distance, marching towards you removing all hope....
anyway keep at it and please let me know if you decide to do some kind of remix...