You have completed the first mission.

Kill yourself 5 times.

Pin 10 enemies to the wall with the Hammerhead.

Complete Mission on any difficulty: Withdrawal

Kill 10 enemies with Melee

Complete Mission on any difficulty: Climax

Complete Mission on any difficulty: Approach

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

Complete Mission on any difficulty: Keegan

Kill 10 enemies using combat opportunities.

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

Complete Mission on any difficulty: Top

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