Full list of all 60 Aliens: Colonial Marines achievements.
The base game contains 50 achievements, and there is 1 DLC pack containing 10 achievements.
Complete all Challenges
Upgrade every Appearance slot once for a Xenomorph class
Kill 2179 Xenomorphs
Upgrade every Loadout slot for a Xenomorph class
Have another player join your party
Revive a teammate
Complete an entire Challenge category
Upgrade every Appearance slot once for your Marine
Earn Rank 60 as a Marine
Edit a Xenomorph Loadout
Spend 30 Commendations
Complete all Campaign levels on Hardened difficulty
Complete all Campaign levels on Ultimate Badass difficulty
Collect all 35 Dog Tags
Purchase all Upgrades for a weapon
Upgrade every slot for a weapon
Kill a Crusher without it damaging you
Kill 3 enemies with a single U4 Firebomb
Defeat the Raven in under 1:10 on Soldier difficulty or higher
Melee a Lurker that is pouncing towards you
Find the Easter Egg
Earn Rank 20 as a Marine
Arm the emergency release and escape in under 2:30 on Sulaco Falls
Defeat all Xenomorphs in the Sulaco hanger bay without them crossing your barricade
Complete all Campaign levels on any difficulty
Complete Home
Collect all 6 Legendary Weapons
Rescue a teammate from a Close Encounter
Complete Hope in Hadley's
Complete Rampart
Collect all 12 Audio Logs
Complete One Bullet without setting off the alarm
Track 100 hostile targets with the Motion Tracker
Kill 5 Spitters without being damaged by acid
Complete The Raven
Find Newt's doll
Kill 10 Xenomorphs in a game with the M56A2 Smart Gun
Set up a UA 571-C Remote Sentry
Complete Sulaco Falls
Survive a Close Encounter with a Facehugger
Edit a Marine Loadout
Complete Distress
Complete a Challenge
Collect a Legendary Weapon
Collect a Dog Tag
Earn Rank 2 as a Marine
Kill 10 Xenomorphs that are using vents
Kill a Xenomorph with a shotgun at very close range
Gib two enemies at once
Kill a Xenomorph climbing on the walls or ceiling
Complete Stasis Interrupted on Ultimate Badass
Kill all the Lurkers in Sulaco engineering
Complete Stasis Interrupted on any difficulty
Destroy all samples in the labs of the Queen module
Find All Stasis Interrupted Audio Logs
Survive the Queen escape
Escape the FTL ship
Sever the umbilical without missing a shot
Destroy the Legato
Find your family