Heal yourself in combat 3 times

Complete any Challenge Tomb

Survive a night in the Siberian wilderness

Enter the Syrian tomb

Complete Stage 2: Madagascar City

Complete the game in moderate mode

Destroy 10 vehicles while being dragged from the rope

Find the Strange Relics

Listen to all optional conversations in game

Complete the game in light mode

Pull 20 enemies over when hanging from a ledge

Play in the ocean near the sunken ship

Just prior to City Chase, stand perfectly still for 30 seconds (stage demo fail)