Aliens: Colonial Marines achievements

32.00%
No Need For Alarm
Complete One Bullet without setting off the alarm
32.00%
Secreted from What?
Kill 5 Spitters without being damaged by acid
32.00%
Dragged Queen
Complete Home
33.00%
I Feel Safer Already
Have another player join your party
33.00%
Just a Grunt
Complete Hope in Hadley's
35.00%
Don't Count Me Out
Revive a teammate
36.00%
Still Got a Job to Do
Complete Rampart
38.00%
Adios, Muchachos
Gib two enemies at once
42.00%
Micro Changes in Air Density
Track 100 hostile targets with the Motion Tracker
44.00%
Quoth the Raven
Complete The Raven
46.00%
... But No Cigar
Rescue a teammate from a Close Encounter
47.00%
Let's Rock!
Kill 10 Xenomorphs in a game with the M56A2 Smart Gun