Here is the full list of all 26 Playable Mockup achievements.
Captured the soul of Despair in standard investigation
Captured the soul of Fear in standard investigation
Captured the soul of Pain in standard investigation
Finish without using Soul Posts
Finish with 30 restricted photo subjects
Training completed
Arrive at AM
Captured the soul of Affection in standard investigation
Captured the soul of Nihility in standard investigation
Captured the soul of Rage in standard investigation
Captured the soul of Affection in Advanced Investigation
Captured the soul of Fear in Advanced Investigation
Captured the soul of Pain in Advanced Investigation
Captured the soul of Nihility in Advanced Investigation
Captured the soul of Despair in Advanced Investigation
Captured the soul of Rage in Advanced Investigation
Finish with less than 10 photos
Defeat It’s Me
Loop 12 times without returning to the Gallery Room
Finish Advanced Investigation within 10 minutes
Finish without increasing execution level
Finish without increasing film
Finish Advance Investigation 3 times in a row
Finish without increasing execution level + Finish without using Soul Posts
Finish without increasing film + Finish without using Soul Posts
Finish with less than 10 photos + Finish without using Soul Posts