Complete Episode 2: "Starved For Help"

Complete chapter 6 of episode 2.

Complete chapter 4 of episode 2.

Complete the game.

Kill 35 enemies with the pistol.

Purchase all skills in one category.

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

Collect 5000 pieces of salvage.

Complete one challenge.

Perform 50 headshot kills in the single player campaign.

Find 25% of GPS caches.

Find 25% of all documents.