As with so many movies today, the characters are all morons or just plain incompetent at basic living. They see a monster and half the time don't even run, just stand there screaming ... then die. When they run, they trip over virtually nothing, fall on the ground, roll on their back and just lay there kicking until the monster gets around to them.
It's pure laziness on the writers and directors parts who seem kind of incompetent as well.
I wanted to give it 1 star but the acting is alright - nothing to rave over but I've seen MUCH worse. Couldn't sit thru the whole thing. Gave up around halfway. The most stupid schmutz you've ever known would do better in these fictional circumstances. A barely tolerable story is ruined because no one knows how to use average intelligent characters to create suspense.