Killed by the Alien 100 times
Collected all Nostromo logs
Completed the game without dying
Collected all ID tags
Killed 10 humans
Navigated Reactor Maintenance without dying
Killed an android using only the maintenance jack
Completed the game on the hardest difficulty setting
Completed the game on any difficulty setting
Completed the game without killing any humans
Completed "Tomorrow, Together"
Completed "Desolation"
Completed "Transmission"
Caused the Alien to retreat using a molotov
Completed "The Message"
Completed "The Descent"
Completed 10 minigames successfully
Used the bolt gun
Completed "Consultation"
Completed "A Synthetic Solution"
Used the shotgun
Collected 100 archive logs
Completed "Hazard Containment"
Completed "The Trap"
Used the flamethrower
Caused the Alien to retreat by using the flamethrower
Turned off the beacon
Knocked down a human or stunned an android with a non-lethal attack
Used the stun baton
Used the revolver
Detected 30 targets with the motion tracker
Completed "Seegson Synthetics"
Performed 10 successful hacks
Completed "The Outbreak"
Constructed one of each craftable item
Completed "The Quarantine"
Completed "The Quarantine" without being killed by the Alien
Completed "Seegson Communications"
Contacted your team and escaped Comms without being attacked by an android
Accessed 10 different rewire points
Escaped from android combat without taking damage
Killed an Android
Used the vent system 20 times
Completed "Encounters"
Encountered the Alien in Sevastopol for the first time
Completed "Welcome to Sevastopol"
Collected an ID tag
Constructed an item
Completed "Closing the Book"
Collected an archive log