Complete Blood Meridian on any difficulty level

Complete a level with more than one player

Complete Mission on any difficulty: Climax

Slice up 10 enemies with the Laser.

Headshot 10 enemies with the Sniper Rifle.

Collect 75% of the journal intelligence found throughout the game.

Kill 10 enemies with Melee

Pin 10 enemies to the wall with the Hammerhead.

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

Complete Mission on any difficulty: Ruin

Kill yourself 5 times.

Complete Mission on any difficulty: Withdrawal