Here is the full list of all 13 Stories Untold achievements. It takes around 2-3 hours to unlock all of the achievements on Windows.
Get all other achievements.
Finish Episode 4.
Finish Episode 3.
Get out of the station.
Respond to the messages correctly.
Finish Episode 2.
Get things up and running.
Finish Episode 1.
Find the code.
Find the photographs.
Learn more about yourself.
Find all recordings in Ward 4.
Be hygiene conscious in Ward 4