Here is the full list of all 46 BURIED STARS achievements.
Fell into eternal purgatory.
Saw a particular epilogue event after getting rescued.
Saw all of Hyesung's rapport events.
Encountered the conclusion of another possibility.
Saw all of Seil's rapport events.
Encountered the attacker unexpectedly.
Encountered the attacker at the site.
Discovered the existence of the hidden command center.
Saw the true ending.
Couldn't take another step before the truth.
Rescued after failing to discover the truth.
Rescued but couldn't complete the picture.
Saw all of Juyoung's rapport events.
Saw all of Gyu-hyuk's rapport events.
Saw all of Inha's rapport events.
Rescued but gave up on truth.
You've gone crazy.
Saw the first ending.
Changed the Auto-Write message.
Recovered more than half of Mental Gage.
Changed the watch settings.
Listened to a recording file.
Opened the watch menu.
Finished my first recapitulation.
Acquired a new keyword with the conversation.
Began the first keyword conversation.
Played the game for the first time.