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