I'm not sure about this one. Without giving any spoilers, its odd.
The beginning is interesting, then it goes really really really bad for a while. Better adjectives? Hackneyed. Dull. Gratuitously violent. Confused.
About an hour in, things take a turn for the more interesting, although the overplayed grunt of violence and US style gun fetish get tiring.
There's a theme of fundamentalism, but i'm not sure that there really are any fundamental christians who act like the moron in this movie. Maybe i'm wrong and the world is a far more horrid place than i believe. At any rate, if those people do exist, i don't expect they have any supernatural abilities such as exhibited here. The suspense of disbelief required is a wee bit too far. As is the torture and violence. pointless. endless.
Still, there are scenes in the film that are clever, hinting at places that a less pain and violence obsessed director could take a better movie.
If you like torture movies and the supernatural and old fashioned detective movies, then perhaps this might be your thing.