In a nutshell: it's a movie about 4 friends trying to survive a zombie conflict. Sound stupid? Yeah, it probably is, but we wanted to make a movie and a zombie movie sounded the easiest.
1) No costumes.
2) No "zombie acting ability" required.
3) And the movie could end whenever we ran out of inspiration or some other conflict that could come up with us producing this movie (though we finished it) showing that the zombies killed everyone.