There are 49 achievements for Aliens: Colonial Marines worth 995 points
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5
Another Bug Hunt
Complete a Challenge
5
Don't Count Me Out
Revive a teammate
5
Need a Deck Of Cards?
Set up a UA 571-C Remote Sentry
5
Ready to Fry Half a City
Edit a Marine Loadout
5
Structural Perfection
Edit a Xenomorph Loadout
10
Coming Outta the Walls!
Kill a Xenomorph climbing on the walls or ceiling
10
Eat This!
Kill a Xenomorph with a shotgun at very close range
10
Field Promotion
Earn Rank 2 as a Marine
10
I Feel Safer Already
Have another player join your party
10
Love at First Sight
Survive a Close Encounter with a Facehugger
10
Micro Changes in Air Density
Track 100 hostile targets with the Motion Tracker
10
Oorah to Ashes
Collect a Dog Tag
10
Personal Friend of Mine
Collect a Legendary Weapon
20
... But No Cigar
Rescue a teammate from a Close Encounter
20
Adios, Muchachos
Gib two enemies at once
20
Another Day in the Corps!
Complete Distress
20
Anytime, Anywhere
Kill a Crusher without it damaging you
20
Bad Feeling About This Drop
Complete Sulaco Falls
20
Dragged Queen
Complete Home
20
Entry Prohibited
Kill 10 Xenomorphs that are using vents
20
Field Modified, Kill Certified
Upgrade every slot for a weapon
20
Fire Drill
Arm the emergency release and escape in under 2:30 on Sulaco Falls
20
Heavy Lifting
Defeat the Raven in under 1:10 on Soldier difficulty or higher
20
It's a Dry Heat
Kill 3 enemies with a single U4 Firebomb
20
Just a Grunt
Complete Hope in Hadley's
20
Lean and Mean
Earn Rank 20 as a Marine
20
Let's Rock!
Kill 10 Xenomorphs in a game with the M56A2 Smart Gun
20
Mostly Come at Night...
Find Newt's doll
20
No Need For Alarm
Complete One Bullet without setting off the alarm
20
No Offense
Melee a Lurker that is pouncing towards you
20
Perfect Killing Machine
Upgrade every Loadout slot for a Xenomorph class
20
Quoth the Raven
Complete The Raven
20
Secreted from What?
Kill 5 Spitters without being damaged by acid
20
Short, Controlled Bursts
Defeat all Xenomorphs in the Sulaco hangar bay without them crossing your barricade
20
Stay Frosty
Complete an entire Challenge category
20
Still Got a Job to Do
Complete Rampart
25
I Heard THAT
Collect all 12 Audio Logs
25
Majority Shareholder
Spend 30 Commendations
30
Adaptive Morphology
Upgrade every Appearance slot once for a Xenomorph class
30
Arbitrarily Exterminated
Kill 2179 Xenomorphs
30
Distinguished Service Medal
Complete all Challenges
30
Game Over, Man!
Complete all Campaign levels on any difficulty
30
I Like to Keep These Handy
Collect all 6 Legendary Weapons
30
Remember the Fallen
Collect all 35 Dog Tags
30
You Look Just Like I Feel
Upgrade every Appearance slot once for your Marine
40
I Can Handle Myself
Purchase all Upgrades for a weapon
40
I Love the Corps!
Earn Rank 60 as a Marine
40
Not Bad For a Human
Complete all Campaign levels on Hardened difficulty
50
State of the Badass Art
Complete all Campaign levels on Ultimate Badass difficulty
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