Completed Chapter 2.

Collected 100 pyroxene.

Completed Chapter 1.

Defeated 1,000 enemies in a single battle.

Completed the first battle.

Clear the infestation in the Medical Wing.

Attempt to destroy the MD-8.

Kill 2 Xenomorphs at once by detonating an exploding Barrel or Pipe.

Get 30 kills with the Riot Shotgun.

Kill a Xenomorph as it attempts to execute you.

Lose a fight in the Mess Hall.

Get 30 kills with the Revolver.

Get 30 kills with the Pulse Rifle.