Survival(2008)

When a group of college students gather for their yearly camping excursion in the forests of North Carolina, where they plan on a weekend of drinking, partying, and debauchery. What they don't expect is they will soon be fighting for their lives. Because there are terrible people in the woods. Not quite crazed redneck or insane cannibalistic maniac. Not quite a chainsaw-wielding, skin-wearing grampa's boy. This time it's a pair of psychotic siblings, who love to capture and torture their prey. Using physical and psychological torture methods, they bring their victims to the very edge of sanity, then release them back into the wooded area that surrounds their home with only two instincts intact: killing and SURVIVAL.