Here is the full list of all 27 SIMULACRA 2 achievements.
Complete the game as a detective
Defeated the Rippleman
Arya, Mina and Rex agrees to defeat the Rippleman
Recovered the phone jammer from police evidence
Acquired the K-remote app from Ruben
Recover the totem from Maya's gym
After feeling betrayed by her own friends, Mina took the Rippleman's deal and became its latest victim.
Feeling wronged and humiliated, Arya took the Rippleman's deal and became its latest victim.
Reveal the truth to Murilo
Complete the game as a journalist
Out of fear and desperation, Rex took the Rippleman's deal and became its latest victim.
Hide the truth from Murilo
Revealed the culprit
You deduce who took the Rippleman's deal
Discover evidence of Mina lying about her tragedy
Discover evidence of Arya faking as an Aluren Muse
Discover evidence of Rex promoting an obvious pyramid scheme
Completed the preliminary investigation
You are dealt the Idol card by TRM
You are dealt the Tycoon card by TRM
You are dealt the Artist card by TRM
You are dealt the Diva card by TRM
Rex to revealed details of the crime that he wouldn't have known
Arya to revealed details of the crime that she wouldn't have known
Mina to revealed details of the crime that she wouldn't have known
Find the suspects earlier police interviews
Call the emergency services