Continuity mistake: Cory threw the tire iron across the road, where it landed near a tree in the second or third row (lower right-hand corner of the screen). Reina and Vlad walked well past that area, much deeper into the woods, where Reina found the tire iron - despite her even telling Vlad the tire iron couldn't have gone so far. (00:06:00 - 00:09:57)
Character mistake: Reina asked Cory if they could "do that thing" because it was helpful for her medical school training. Reina then put a raw slab of steak/meat across his forehead and made slits in the meat as well as jabbed at it. A medical student studying to become a brain surgeon should know about and practice the safe handling of raw meat. (00:23:10)
