Here is the full list of all 17 Truth: Disorder achievements. It takes around 0-1 hour to unlock all of the achievements on Windows.
Ending: Living in a lie
Ending: here it is, the truth
This is the end?
You have the right of choice
You have a disorder
Stop, Aika and Yukino?
Have you met Aika and Yukino simultaneously
In school first time
You learned the name of the mysterious stranger
You met a mysterious girl with white hair
You met with the dark essence
You had a fun weekend with Yukino
Suddenly Aika came to visit you
The first meeting with Aika
Welcome to the game
The first meeting with Yukino
I'm Thoru