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