Full list of all 50 Alien: Isolation achievements worth 1,000 gamerscore. It takes around 20-25 hours to unlock all of the achievements on Xbox 360.
Completed the game without dying
Completed the game on the hardest difficulty setting
Completed the game without killing any humans
Collected all ID tags
Collected 10 Nostromo logs in the main campaign
Navigated Reactor Maintenance without dying
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 any difficulty setting
Killed by the Alien 100 times
Completed "Tomorrow, Together"
Completed "Desolation"
Completed "Transmission"
Killed 10 humans
Completed "The Message"
Completed "The Descent"
Completed 10 minigames successfully
Caused the Alien to retreat using a molotov
Used the bolt gun
Completed "Consultation"
Collected 100 archive logs
Completed "A Synthetic Solution"
Killed an android using only the maintenance jack
Completed "Hazard Containment"
Used the shotgun
Completed "The Trap"
Constructed one of each craftable item
Caused the Alien to retreat by using the flamethrower
Used the flamethrower
Detected 30 targets with the motion tracker
Turned off the beacon
Completed "Seegson Synthetics"
Used the stun baton
Knocked down a human or stunned an android with a non-lethal attack
Performed 10 successful hacks
Completed "The Outbreak"
Completed "The Quarantine"
Completed "Seegson Communications"
Used the vent system 20 times
Accessed 10 different rewire points
Escaped from android combat without taking damage
Used the revolver
Killed an Android
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