Indiana Jones and the Emperor's Tomb (PlayStation 2)
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Art gallery
Collect all artifacts in the game to unlock an art gallery.
Avoid falling damage
Press R1 before you hit the ground to enter combat mode. You will not get any damage from falling.
Break wall in Istanbul Sunken City
When you reach Istanbul Sunken City, to break the damaged wall, hover above the head in the water with the crane. Press X and it will automatically break it up.
Drink from canteen
To drink from the canteen, hold X. If you instead tap X, it will take longer. Holding X also helps when you fill your canteen.
Invincibility
Go to the start screen and hold down L1+R1 and press Up, Up, Down, Up, X, Square, X, Circle, Up, Down, Triangle, Start.
Magical barrier
Equip the PaCheng and press R1 to block.
Pistol whip
Press Square to pistol whip your adversary. Note: This works for all guns, not just the pistols.