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
Met the last person left alive
Changed body at Omicron
Failed at acquiring the DUNBAT
Escaped Theta
Discovered Theta
Crash-landed on peak Delta
Discovered Lambda
Talked to Catherine Chun