Audio problem: When Britney Spears gets pushed into the Pit of Death, you hear her talk and scream but her lips are not moving.
Audio problem: The day after Operation Mardonius, when the first set of bombs explodes you first see the explosion and then hear it after a second, then as the last bombs explode you both see and hear the sound at the same time.
Audio problem: In the scene where James "forgot [his] gloves down there", the sound from the detonation just before that is incorrectly in sync with the explosion. Given that they are a distance away from the blast itself, what should happen is you see the blast first, then hear it say about a second or more later (based on the estimated distance). (00:48:50)
Audio problem: When Pavlov is speaking with the doctor, we hear him finishing a sentence with "say, a doctor, perhaps" but his motionless mouth and jaw show he isn't speaking at all in the side shot. (00:19:00)