Here is the full list of all 13 Grisaia Phantom Trigger Vol.1 achievements.
Boot up the game!
Complete chapter 1!
Complete chapter 2!
Complete chapter 3!
Complete chapter 4!
Complete chapter 5!
Complete chapter 6!
Complete chapter 7!
Complete chapter 8!
Complete chapter 9!
Play the game in English
Play the game in Japanese
Play the game in Chinese