My quick rating - 4.0/10. Well, that was a movie where it ended and my thought was "ok, take it or leave it" it certainly didn't have any strong points. The acting was "there", the dialogue was non-existent without using the f-word. Sentences often made absolutely no sense when uttered. Not sure why this is considered a "horror" either. Barely a psychological thriller really. I only gave it a 4 because I appreciated the claustrophobic feeling these people must've endured and the poorly acted insanity it would bring out. Slight side note, I read a review that compared it to "Dog Soldiers" and I have no idea what that reviewer was smoking, but it doesn't even hold a candle to that movie. Almost an insult putting them in the same sentence.
