Revealing mistake: When Lara gets out of the bath, you can see a strap on her shoulder which means that Lara wasn't naked when she got out of the bath.
Revealing mistake: Towards the end, when the knife's being pulled out of someone, you can clearly see this was a retractable blade with a pre-painted blood-pattern, as the blood on the knife at his chest level doesn't change - it stays static as the knife handle rises.
Revealing mistake: In the scene in the ice cave, Lara rings the bell to break down the wall. Funny the icicles hanging from the bell never move or fall.
Revealing mistake: During the bungee scene it is meant to be night-time, but when the camera pans up to the sky light you can clearly see blue sky and clouds.
Revealing mistake: When everyone dogsleds toward their objective, you can see the filming crew's snowmobile tracks at the bottom of the screen.