Collect 75% of all relics.

Complete the game.

Shoot a bundle of dynamite out of the air.

Kill and loot 10 small animals (rabbits, chickens, rats).

Kill 35 enemies with the pistol.

Kill 40 enemies with the shotgun.

Find 25% of GPS caches.

Collect 5000 pieces of salvage.

Complete one optional tomb.

Force an enemy to drop dynamite that kills two people when exploding.

Perform 50 headshot kills in the single player campaign.

Fully upgrade all weapons