No missable achievements (plus 50 unknown)
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Collected an archive log
Completed "Closing the Book"
Collected an ID tag
Constructed an item
Completed "Welcome to Sevastopol"
Encountered the Alien in Sevastopol for the first time
Used the revolver
Used the vent system 20 times
Killed an Android
Escaped from android combat without taking damage
Completed "Seegson Communications"
Accessed 10 different rewire points
Used the flamethrower
Completed "The Quarantine"
Caused the Alien to retreat by using the flamethrower
Knocked down a human or stunned an android with a non-lethal attack
Used the stun baton
Completed "The Outbreak"
Performed 10 successful hacks
Completed "Seegson Synthetics"
Detected 30 targets with the motion tracker
Turned off the beacon
Killed 10 humans
Used the shotgun
Completed "The Trap"
Completed "Hazard Containment"
Completed "A Synthetic Solution"
Used the bolt gun
Completed 10 minigames successfully
Completed "The Descent"
Completed "The Message"
Completed "Tomorrow, Together"
Completed the game on any difficulty setting
Constructed one of each craftable item
Collected 100 archive logs
Caused the Alien to retreat using a molotov
Killed an android using only the maintenance jack
Completed "The Quarantine" without being killed by the Alien
Contacted your team and escaped Comms without being attacked by an android
Completed the game on the hardest difficulty setting
Navigated Reactor Maintenance without dying
Killed by the Alien 100 times
Completed the game without killing any humans
Collected 10 Nostromo logs in the main campaign
Collected all ID tags
Completed the game without dying