This requires a full playthrough. Took me a bit to figure this one out.
You will need to follow everything by the codex (Law/Rules).
It's difficult to know for sure what options affect the achievement but the list below should help.
- Don't let the dog have pills
- Go to security and snitch on Zena being in Luis bunk
- Speak to security about Paul and then go find him before going to the lab, the message from Paul is fake. Then Michio will get arrested.
- Complete all cases correctly and Talya should stay alive
They all should help towards this achievement.
If required you can follow my video guide below.