Find 75% of all documents.

Loot 200 enemies.

Collect 75% of all relics.

Kill 35 enemies with the pistol.

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

Perform 15 finishers.

Collect 5000 pieces of salvage.

Reached the bottom.

Perform 50 headshot kills in the single player campaign.

Collect 25% of all relics.

Complete one challenge.

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