You may or may not remember my utter loathing of the movie Hostel (IMBD).
To this day, I have not re-watched Hostel. Well, in my top collection of utterly fucked up movies, it now has a rival:
The Divide (IMBD).
Unlike Hostel, I strongly recommend The Divide. It's wrong on SO many levels, but very likely quite true to form in the case of a nuclear apocalypse. This movie will stay with me for a long, long time. See it.