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