Continuity mistake: In the pursuit scene between Jack in the red Chevy and the two bad guys in the silver Audi, the Chevy right front fender is completely wrinkled after a side to side crash. When the car stops after exiting the tunnel, the fender is still wrinkled, but when Jack momentarily loses control and the car skids, the fender is unwrinkled and stays that way.
Continuity mistake: When Sandy is going out she puts on bright red lipstick. When the police find her body the lipstick is gone.
Continuity mistake: When Jack reverses aggressively out of the motel car park onto the road, he steers the car to his left and drives down the road, not leaving any tyre marks. In the next shot, the police cars exit the car park sliding out onto the road to their right, following tyre marks which have magically appeared, presumably from a previous take of that action.
Other mistake: In the scene where James Barr is shown shooting the four men during the war his rifle movement is inconsistent with where the targets were. He took aim at the man furthest away in a line. His rifle would have to move down as he shot each person moving down the line. Instead his rifle moves down then up and up again etc. Even if the targets decided to run after the first shot the rifle movement is inconsistent.