Complete all optional tombs.

Collect 75% of all relics.

Complete one challenge.

Perform 15 finishers.

Find 75% of all documents.

Kill 75 enemies with the rifle.

Collect 25% of all relics.

Get 250,000 fans in MyCAREER mode.

Collect 5000 pieces of salvage.

Perform 50 headshot kills in the single player campaign.

Find 25% of all documents.

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

Kill 50 enemies with the bow.