Complete Mission on any difficulty: Climax

Complete Mission on any difficulty: Epicenter

Complete Mission on any difficulty: Snake Fist

Pin 10 enemies to the wall with the Hammerhead.

Headshot 10 enemies with the Sniper Rifle.

Collect 25% of the journal intelligence found throughout the game.

Kill 10 enemies using combat opportunities.

Kill yourself 5 times.

Roast 10 enemies with the Napalm Cannon.

Complete Mission on any difficulty: Awakening

Defeat the Kraken in the single player Campaign.

Collect 5 pieces of intel in the single player Campaign.

Kill 1000 enemies in the single player Campaign.