Twitching foot in the end (spoilers)
In the end, right before the survivors take off you get a close-up of the crazy christian mom's foot and it twitches. What was the point of that? To show us that she was still alive? Naturally there's no way anyone would survive getting nailed to a wall by three large nails, one of them going right through your head. But obviously a lot of unrealistic things happened in this ridiculous film. So what gives?
They haven't made a sequel so far, but do you think that was an opening and a way to advertise a possible sequel?