Ridiculously bad, Watch with a group of friends for the best experience.
There's no attachment to the main characters you feel nothing when anything bad happens to them. The setup etc was just boring and made no sense at times, the only good bits were getting to laugh over how silly the idea was and mocking the terrible writing choices or how the blood effects literally looked like a sprinkler from from a pS1 running on 10 frames a second.
Very odd with one of the most anti climactic endings I've ever seen.
If you want a film to laugh at with friends tho it makes it a 5 star.