Other mistake: To stop herself from bleeding after removing the tree branch from her body, Jen heats the wrapper of a beer can and places it against the wound. Later it is revealed that doing this resulted in the logo being branded onto her skin. However, if the wrapper was placed on her skin and the logo was facing towards her, then the logo should have been mirrored, but it's not. (00:57:40 - 01:05:20)
Other mistake: Jen breaks a flashlight against a rock and the glass lands on the ground beside it. Stan runs up and his bare right foot steps on the glass. However, given the rock besides the glass, tripping could not have been possible because his left foot would have bumped into the rock. (01:20:35)
Other mistake: When Jen shoots Stan in the head whilst he tries to run her over with the SUV, the bullet pierces through his head and through the back of the headrest. There is no bullet hole in the front of the headrest, shown when Jen approaches the SUV, even though there is one in the back. (01:24:30 - 01:25:05)
Other mistake: When Dimitri is looking at Jen through his binoculars, a POV shot of the binoculars shows him looking at her mouth, then moves upwards to look at her eyes. Dimitri then continues to move his binoculars upwards, but in the next POV shot of the binoculars, the binoculars are shown looking back down at her lips, even though the binoculars should be positioned further up. (00:09:55)
