Because of the numerous safety features on an elevator, it is impossible for an elevator to simply fall if the cables snap.
The airliner which crashes radios in that its engines are out, yet the engines can be heard when it flies overhead.
One of the side-quests involves fetching a woman named Kim something to drink because she is thirsty. Less than 5 feet away from her can be found an energy drink.
The blade on the circular saw modification spins the wrong way.
Dead bodies that haven't turned into zombies make the same noise when striking the body as zombies do when hit.
After Jin kills her father she shoots the photo of them together stood outside the hotel. However, when she shoots the picture frame the sound of the gun and the picture frame smashing does not match up. The frame smashes before the bullet has been fired.
Throughout the game, players combat zombies that, despite being the undead, can be drowned in shallow water. Despite the fact they appear to have a functioning respiratory system, this does not explain how the Infected type zombies (which can also drown) are able to run and scream endlessly without fatigue. This also fails to explain the Floater type zombie which often hides in shallow waters.