ahh
What an interesting concept. But it sure as hell could've been expressed better. It's generally the same melodies with slight variations throughout, and the same onebar beat going on all the time, needs more variation, some more present bass if there actually is one there, etc. Try some more reverb on the lead for scary and distortion on beat for zombie feeling for starters. I don't know what you intend doing with this song, so it's really just yer choice