Full list of all 30 Dishonored: Death of the Outsider achievements. It takes around 15-20 hours to unlock all of the achievements on Windows.
Took both bank vault keys
Dropped Ivan Jacobi through the trapdoor
Had a guard salute you
Finished a mission without killing anyone
Freed the assassin Daud
Listened to what swarms of rats have to say 5 times
Obtained an ancient weapon
Recovered the stolen archive
Touched the Eye of the Dead God
Returned the Outsider to the mortal world
Killed the Outsider
Stole the audiograph from the gallery without disabling the safeguard floor
Used Semblance to mimic Shan Yun and sing into the microphone
Won the auction at Colibron Plaza
Opened every safe inside the main vault
Emptied the vault without tampering with any security systems, leaving everyone unharmed and asleep
Sent the vault crashing through the floor
Attended the meeting as Brother Cardoza
Broke 4 Oraculum censers and listened to the prophecies
Destroyed an Envisioned cultist
Pushed an enemy to his demise using Void Strike
Sent someone flying 40 meters using Hook Mines
Shot a guard in the head with a fountain pen
Used Displace on a marker placed with Foresight and eliminated a target
Finished the game without being detected
Finished the Original Game+
Made 3 people vomit using a single bottle of Plagued Spirit
Made an enemy explode into pieces using Displace
Completed all contracts
Collected all Eleuterio Cienfuegos paintings