Here is the full list of all 10 SOMA achievements. It takes around 8-10 hours to unlock all of the achievements on Windows.
They’re not us!
Reached the Omega Space Gun
Escaped Theta
Changed body at Omicron
Failed at acquiring the DUNBAT
Discovered Theta
Crash-landed on peak Delta
Discovered Lambda
Talked to Catherine Chun
Met the last person left alive