I didn't know what to expect going into this other than Zombies. I was really surprised. A lot of people have compared it to Shaun of the Dead, and there is some definite homage there. No offense to the actors in this, but they just aren't Simon Pegg. There are really no scares that I remember, but the effects themselves are not that bad (remember - non Hollywood!) I really laughed a lot at this flick. Some of it was at corniness, some was some good humor. At one point I did think that this would be a good candidate for an (over the top) Americanized version of Shaun of the Dead. It really picks on so many aspects of culture.
The lead actress really did a good job, as did the two playing Lance and Tom. I think "Lance" gets some of the best lines and has some good comedic timing.
As long as you don't mind a little poking fun at yourself and are not looking for the next over-the-top, over-polished Hollywood turd, this is a very enjoyable movie.