Here is the full list of all 10 SOMA achievements worth 1,000 gamerscore. It takes around 6-8 hours to unlock all of the achievements on Xbox One.
Talked to Catherine Chun
Discovered Lambda
Crash-landed on peak Delta
Discovered Theta
Failed at acquiring the DUNBAT
Escaped Theta
Changed body at Omicron
Met the last person left alive
Reached the Omega Space Gun
They’re not us!