Defeat the Kraken in the single player Campaign.

Defeat the Goliath in the single player Campaign.

Complete Mission on any difficulty: Approach

Kill yourself 5 times.

Headshot 10 enemies with the Sniper Rifle.

Complete Mission on any difficulty: Snake Fist

Collect 50% of the journal intelligence found throughout the game.

Complete Mission on any difficulty: Elementary

Complete Mission on any difficulty: Ruin

Complete Mission on any difficulty: Replica

Complete Mission on any difficulty: Withdrawal

Complete Mission on any difficulty: Discovery

Complete Mission on any difficulty: Sanctuary