Here is the full list of all 50 Alien: Isolation (Windows) achievements worth 1,000 gamerscore.
Get killed by the Alien 100 times
Completed the game without killing any humans
Completed the game without dying
Completed the game on the hardest difficulty setting.
Complete the fifth mission without being killed by the Alien
Contact your team and escaped Comms without being attacked by an android
Completed the game on any difficulty setting.
Complete the eighteenth mission
Collect all ID Tags
Collect 10 Nostromo logs in the main campaign
Complete the seventeenth mission
Complete the sixteenth mission
Complete 10 minigames successfully
Complete the fifteenth mission
Complete the fourteenth mission
Navigated Reactor Maintenance without dying
Use the Bolt Gun
Complete the thirteenth mission
Complete the twelfth mission
Access 10 different rewire points
Escape from android combat without taking damage
Complete the eleventh mission
Collect 100 archive logs
Detect 30 targets with the motion tracker
Use the Shotgun
Complete the tenth mission
Cause the Alien to retreat using a molotov
Cause the Alien to retreat by using the flamethrower
Kill an android using only the maintenance jack
Use the vent system 20 times
Use the Flamethrower
Turned off the beacon
Complete the seventh mission
Construct one of each craftable item
Perform 10 successful hacks
Complete the sixth mission
Knock down a human or stunned an android with a non-lethal attack
Kill 10 Humans
Use the Stun Baton
Complete the fifth mission
Complete the fourth mission
Kill an android
Complete the third mission
Use the Revolver
Complete the second mission
Encountered the Alien in Sevastopol for the first time
Collect an ID tag
Construct an item
Complete the first mission
Collect an archive log