Revealing: In the scene after Shia is told that the three months would not be easy, it switches to a scene with him playing an Xbox 360. The game on the screen is GRAW 2 and it shows that he is playing on the tv, but if you look at the controller in his hand, the controller is off because the light on the controller would be green.

Factual error: In the scene when Kale uses the lamp, taking off its lamp-shade, to see what's inside the hole, he points it in there. The lamp, actually, shouldn't illuminate the wall in one point creating a circle like a flashlight but wholly lighten the larger area.