Confusing
There doesn't seem to be much of a story there even though this is a parody.
As far as story goes; why are we supposed to relate to the guy with the briefcase. Who were the zombie killers, and what was in his briefcase?
I would have loved to see the zombie walk when he faces the camera. It would have made him more dynamic.
The music is highly distracting. Next time, try to find something more fluid.