Here is the full list of all 31 逆光迷途 Lost in Darklight achievements.
Finish Exploring Father's Studyroom.
Finally Reunited with Jiang Tiancheng.
Is the street flushed with celebrities?
Witnessed father's car accident.
Getting called by S for the first time.
First time failing the task.
Keep losing key clues, fail 20 times in total.
Keep losing key clues, fail 30 times in total.
Failing is the first step toward success. Fail 40 times in total.
Achieve Qiao Fei's ending: Lifelong Companion
Achieve Qiao Fei's ending: That Wonderful Moment
Achieve Xu Mengyun's ending: Play Along
Achieve the regular ending: Lifelong Regret
Achieve An Yue's ending: Feud
Achieve the regular ending: Fate is Fickle
Achieve the regular ending: Played by Fate
Achieve Xu Xixi's ending: No Turning Back
Achieve Xu Xixi's ending: Dark Fog
Enquire once.
Enquire twice.
Enquire 3 times.
Perform deduction once.
Perform deduction 3 times.
Perform deduction 7 times.
Fail in time-limited action once.
Fail in time-limited action 5 times.
Fail in time-limited action 10 times.
Meet Xu Mengyun by accident.
Who is Ding Beifan?
An Yue's information was found.
The head of Xu's Group does have the swagger.