Find 75% of all documents.

Purchase all skills in one category.

Find 75% of GPS caches.

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

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

Collect 5000 pieces of salvage.

Perform 50 headshot kills in the single player campaign.

Find 25% of GPS caches.

Find 25% of all documents.

Complete one challenge.

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

Gather intel on Raul Menendez from Mullah Rahmaan.

Complete a level with customized loadout.