Set up a UA 571-C Remote Sentry

Survive a Close Encounter with a Facehugger

Collect a Legendary Weapon

Edit a Marine Loadout

Gib two enemies at once

Earn Rank 2 as a Marine

Kill a Xenomorph with a shotgun at very close range

Knock over 1000 Scientists

Minimum score 10k in every mission

Successfully escort the VIPs to safety.

Successfully neutralize the SDC freighter at Keppel Terminal.

In Die Rise, reach round 10 before turning on the power.

In Die Rise, kill 5 zombies with a single shot from the Sliquifier.