Deliberate "mistake": During the scene where Carlos and L.J. are searching the motel, L.J. sees a zombie which turns out to be a reflection in a wall-length mirror. L.J. shoots, breaking the mirror and realizing his mistake. But, if he had been standing in front of the mirror as shown, he should have seen his own reflection standing there as well. This was done as an homage to a similar encounter in the original game.

Revealing: As the mutated zombies chase some of the survivors up the cement ramp in Las Vegas, watch the very last zombie just behind the girl in the tank top. He slows himself down to a fast walk when the actress starts running too slow.