How bad is it? It's a Uwe Boll film based on a video game. That spells disaster.
Should you see it? NO!
I had this cued up before I realized what it was going to be and once I saw Uwe Boll was the director, it was too late. Five young people go to a huge party on an island inhabited by zombies. I've never played the game, but I'm assured that that makes no difference; this film just sucks (a little footage from the game itself doesn't look interesting, either). People ignore obvious signs and shoot zombies like it's another day at the office. There just happens to be an arsenal of weapons available, without explanation. The fight scenes are poorly staged, but rather than being comical, are just boring.