It's a zombie flick performed by porn actors. What were you expecting? As porn horror goes, I think that this is the best that you can hope for. Lots of carnage and boobies. Hey, that's an element for success. I was actually quite impressed that they could pull this off for just one million dollars.
You can't expect anything more from big boobs with guns, but on that score, this movie really rates. It's cheap and campy, and does nothing to further the human condition, but it doesn't try to. It's real porn stars acting like zombies. That rates in my book (not that I've ever seen any porn movies).
If you're looking for depth, look elsewhere. But if you're looking for heaving breasts bouncing to rhythmic automatic weapons fire, this is your flick.
Unfortunately, Robert Englund shows that he has no acting chops here.