In the start of the game it's implied that Chris Hackett's children, Kaylee and Caleb, are teenage aged children that attend the camp. Later in the game, a family tree lists the children's birth dates in the late 1990's. The game is mean to take place in 2021, therefore the Hackett children should be in their 20's.
In Chapter 9, when Ryan is running from Bobby, Ryan goes through a doorway that opens towards him. Once on the other side, Ryan blocks the door with a wardrobe, but the block shouldn't be effective as it would not impede the direction in which the door opens. Nevertheless, it can be seen that Bobby is pushing against the door immediately afterward, with the door appearing to open the opposite direction (into the wardrobe) as opposed to its original opening direction.
In Chapter 8, Laura's eyes turn yellow as the infection takes hold, but they revert to blue on her character model (including the pause screen) when game play resumes.
Emma finds the rifle and hangs it by the strap on her left shoulder. In the next shot, it'on her right shoulder. The rifle is hanging by her left hip. In order for this to have happened, she would have had to lift the rifle strap over her head, which she doesn't do.
Emma jumps into the water. Jacob, still standing on the dock does the action of removing his shirt, but he still has his shirt on. Then it shows Emma in the water and cuts immediately back to Jacob who has his shirt, pants, shoes and socks off.
Achievement 'You're Breathtaking!' subtext reads "Passed 5 Don't Breath events" when it should read "Passed 5 Don't Breathe events" (found on Xbox. Playstation is to be confirmed)