Here is the full list of all 30 Dishonored: Death of the Outsider achievements worth 1,000 gamerscore.
Finished the game without being detected
Finished the Original Game+
Emptied the vault without tampering with any security systems, leaving everyone unharmed and asleep
Pushed an enemy to his demise using Void Strike
Shot a guard in the head with a fountain pen
Killed the Outsider
Returned the Outsider to the mortal world
Destroyed an Envisioned cultist
Touched the Eye of the Dead God
Made 3 people vomit using a single bottle of Plagued Spirit
Completed all contracts
Recovered the stolen archive
Attended the meeting as Brother Cardoza
Broke 4 Oraculum censers and listened to the prophecies
Opened every safe inside the main vault
Obtained an ancient weapon
Sent the vault crashing through the floor
Collected all Eleuterio Cienfuegos paintings
Won the auction at Colibron Plaza
Used Displace on a marker placed with Foresight and eliminate a target
Made an enemy explode into pieces using Displace
Had a guard salute you
Used Semblance to mimic Shan Yun and sing into the microphone
Took both bank vault keys
Stole the audiograph from the gallery without disabling the safeguard floor
Dropped Ivan Jacobi through the trapdoor
Sent someone flying 40 meters using Hook Mines
Finished a mission without killing anyone
Freed the assassin Daud
Listened to what swarms of rats have to say 5 times