| icon | info |
|---|---|
 | This Is Hayes, Pioneer Station, Signing Off |
 | Something Lurks Under The Hills |
 | First Steps Into Madness |
 | Harper's Hell |
 | Making a Stand |
 | Where It All Begun |
 | Living Nightmare |
 | The Darwin Era Was Here |
 | Deep Into Insanity |
 | The Passenger |
 | The Spire |
 | Excavating The Truth |
 | Abysmal Horrors |
 | The More The Merrier |
 | This Went Smoothly Finish the game on Medium. |
 | Fair And Square Finish the game on Hard. |
 | This Ain't No Picnic Finish the game on Nightmare. |
 | Perfect Organism Finish the game on "No One Can Hear Them Scream" mode. |
 | Regicide |
 | Cleaning Lethe, One Nest At A Time During a campaign, kill 100 Xenomorphs. |
 | Come on, You Wanna Live Forever? Advance a Sergeant to level 10. |
 | El Riesgo Siempre Vive Advance a Gunner to level 10. |
 | Bandage Lover Advance a Medic to level 10. |
 | The Cable Guy Advance a Tecker to level 10. |
 | Frontliner Advance a Recon to level 10. |
 | Hardened In The Heat Of Battle During a campaign, advance each Marine Class to level 10. |
 | Heavy Steps |
 | Stuff Of Nightmares |
 | Flawless Victory Keep all of your marines alive during a campaign. |
 | Archivist Gather all datapads. |
 | Colonial Barrels Kill an enemy by using an explosive barrel. |
 | Damn Dude, You Gotta Lose Some Weight! Secure an unconscious marine. |
 | Omelette Du Fromage Destroy 4 eggs with one grenade or an RPG shot. |
 | Recouped Investment Have one Sentry kill at least 10 aliens. |
 | Use The Bumper, That's What It's For |
 | This Was No Papercut Save a marine from dying of Bleeding. |
 | Keep 'Em Coming Kill every Alien of a Massive Onslaught. |
 | Snatched Out Prevent a marine from being Abducted. |
 | The True Experience In any mission, complete at least one objective with only one marine in the squad. |
 | The Shrink Hates Me Remove a Trait from a marine. |
 | Call Me Snake Kill an enemy before they detect the squad. |
 | Perfect Enhancements During a campaign, unlock every Xeno Tech. |
 | One For Every Occasion During a campaign, unlock every weapon. |
 | People Person During a campaign, secure 5 survivors. |
 | Chalk It Up To Experience |
