Not that bad
It needs some work, imo.
First of all, the animation itself looks absolutely "tweeny" sometimes, which is somehow annoying. Also, the fact that the sticks do not bend is something i dislike, but probably that's just me :).
Also, why only the zombie boss has got (green) blood?
"Spybreak" has been probably overused as an action soundtrack but it is good as far as it works.
You've done a pretty decent work on sounds, though.
I'm waiting to see the final release :)