| 100 Times Too Many (secret) |
Get killed by the Alien 100 times |
5 |
| A Hunt Begins |
Complete the third mission |
10 |
| A Perfect Organism |
Encounter the Alien in Sevastopol for the first time |
10 |
| A Record of Disaster |
Collect an archive log |
10 |
| A Synthetic Solution |
Complete the twelfth mission |
10 |
| A True Engineer |
Construct one of each craftable item |
20 |
| An Outpost of Progress |
Complete the seventh mission |
10 |
| Archivist |
Collect all Nostromo logs |
40 |
| Awake |
Complete the first mission |
10 |
| Back Off (secret) |
Cause the Alien to retreat by using the flamethrower |
10 |
| Bait |
Complete the tenth mission |
10 |
| Build to Survive |
Construct an item |
5 |
| Caught in the Trap |
Complete the sixth mission |
10 |
| Consultation |
Complete the thirteenth mission |
10 |
| End of the Hunt |
Complete the eighteenth mission |
10 |
| Every Bullet Counts |
Use the revolver |
10 |
| Fault Detected |
Kill an Android |
20 |
| Free the Torrens |
Complete the seventeenth mission |
10 |
| Hazard Containment |
Complete the eleventh mission |
10 |
| Hide. Run. Survive. |
Complete the fifth mission without being killed by the Alien |
40 |
| How Do You Feel? |
Complete the fifth mission |
10 |
| I Admire its Purity |
Detect 30 targets with the motion tracker |
20 |
| Just out of Reach |
Contact your team and escape Comms without being attacked by an android |
40 |
| Light 'em Up |
Use the flamethrower |
10 |
| Mercy or Prudence? |
Complete the game without killing any humans |
50 |
| Mind Your Step (secret) |
Navigate Reactor Maintenance without dying |
20 |
| My Turn Now |
Kill an android using only the maintenance jack |
40 |
| Not a Scratch |
Escape from android combat without taking damage |
20 |
| Not the First (secret) |
Turn off the beacon |
10 |
| One Shot |
Complete the game without dying |
100 |
| Power Games |
Access 10 different rewire points |
10 |
| Retreat From Fire (secret) |
Cause the Alien to retreat using a molotov |
20 |
| Ripley, Signing Off |
Complete the game on any difficulty setting |
50 |
| Seegson Security Bypass |
Perform 10 successful hacks |
10 |
| Seegson Systems Expert |
Complete 10 minigames successfully |
10 |
| Self Defense |
Kill 10 humans |
10 |
| She's in the Vents... |
Use the vent system 20 times |
20 |
| Shock to the System |
Use the stun baton |
10 |
| Stunned (secret) |
Knock down a human or stun an android with a non-lethal attack |
10 |
| Survivor |
Complete the game on the hardest difficulty setting |
100 |
| The Message |
Complete the fifteenth mission |
10 |
| The Missing |
Collect an ID tag |
10 |
| The Taken |
Collect all ID tags |
40 |
| This Should Work |
Use the bolt gun |
10 |
| Throwing the Switch |
Complete the fourteenth mission |
10 |
| Transmission |
Complete the sixteenth mission |
10 |
| Use With Caution… |
Use the shotgun |
10 |
| Voices of Sevastopol |
Collect 100 archive logs |
40 |
| Welcome to Sevastopol |
Complete the second mission |
10 |
| You Shouldn't Be There. |
Complete the fourth mission |
10 |
