Full list of all 50 Alien: Isolation achievements worth 1,000 gamerscore. It takes around 40-50 hours to unlock all of the achievements on Xbox One.
Completed the game on the hardest difficulty setting
Completed the game on any difficulty setting
Completed "Tomorrow, Together"
Completed "Desolation"
Caused the Alien to retreat using a molotov
Completed "Transmission"
Completed "The Message"
Collected 100 archive logs
Completed "The Descent"
Completed 10 minigames successfully
Killed an android using only the maintenance jack
Used the bolt gun
Completed "Consultation"
Completed "A Synthetic Solution"
Completed "Hazard Containment"
Used the shotgun
Completed "The Trap"
Detected 30 targets with the motion tracker
Turned off the beacon
Killed 10 humans
Performed 10 successful hacks
Completed "Seegson Synthetics"
Completed "The Outbreak"
Used the stun baton
Knocked down a human or stunned an android with a non-lethal attack
Caused the Alien to retreat by using the flamethrower
Used the flamethrower
Completed "The Quarantine"
Completed "Seegson Communications"
Accessed 10 different rewire points
Killed an Android
Used the revolver
Escaped from android combat without taking damage
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
Collect all ID tags
Collect 10 Nostromo logs in the main campaign
Contact your team and escape Comms without being attacked by an android
Complete the game without killing any humans
Navigate Reactor Maintenance without dying
Construct one of each craftable item
Get killed by the Alien 100 times
Complete the fifth mission without being killed by the Alien
Complete the game without dying