Here is the full list of all 17 My devil's voice (MLA) achievements.
Demon ending
Angel ending
True ending
Max evil points
Max angel points
Decrease her nerd status
Unlock all scenes
You realy liked it : )
Tell her she is a bad employe
Meet the demon in leather
Lose your hand
Get all 3 abilities
Get running girl scene
Get scene with yoga girl
Try to find Murano on the lectures
Get all scenes with Murano
Lose your maskarade