Purchase all skills in one category.

Kill 25 unaware enemies.

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

Collect 5000 pieces of salvage.

Kill 50 enemies with the bow.

Perform 50 headshot kills in the single player campaign.

Complete one challenge.

Perform 15 finishers.

Find 25% of all documents.

Kill and loot 10 large animals (deer, boar, wolves).

Buy every upgrade and character in multiplayer.

Purchase a new multiplayer character.

Collected all trophies!