The line reading (I refuse to call it acting) is uniformly awful. This is a collection of deadbeat dads and strippers pretending to be in a movie between cans of Schlitz. The camera work is drunken father shooting vacation film quality and while the special effects are okay the scariest effect is the breast augmentation scars in the nude scene.
The story is awful, the sets are from a haunted Halloween put on by ADHD middle school students and once again the line reading (remember this is not acting anymore than sinking to the bottom of a pool is swimming) is distracting beyond mere words. Avoid.
The script sucks, and the performances are uniformly awful. Not ONCE will you get the feeling that these "actors" are paying attention to anything other than the cue cards that were doubtlessly being held off camera. (Just listen to the way one guy drones "Oh, baby...that feels so good" during a sex scene. Come on, if you can't even fake THAT convincingly, then there's no hope for you!) The characters spend so much time screaming and yelling at each other that I couldn't wait for the killer to wipe them all out just so they'd shut the hell up.
Sadly, that describes well over a dozen movies I've seen.