Complete one challenge.

Find 75% of all documents.

Loot 200 enemies.

Purchase all skills in one category.

Get A Headshot During The Rooftop Tremors

Kill 25 unaware enemies.

Find 25% of GPS caches.

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

Perform 50 headshot kills in the single player campaign.

Find 25% of all documents.

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

Took down the jet in one attempt in Rock And A Hard Place

Finish any track using only acceleration and brake