Here is the full list of all 12 Sentimental Trickster: Yaoi BL Gay Visual Novel achievements.
Begin Haru's story
Start Shinya's route
Start Soichiro's route
Start Kanae's route
Unlocked Shinya's good ending
Unlocked Soichiro's good ending
Unlocked Kanae's good ending
Repaired your relationship with your mother
Happy birthday, Haru!
Overcame the past and moved on to the present
Start Jin's route
Unlocked Jin's good ending