Here is the full list of all 19 Tasty Shame in Silver Soul! achievements.
Finish the first Alice route
Finish the first Charlotte route
Finish the first Nicole route
Finish the second Alice route
Finish 30 levels
Finish 10 levels
Finish the first level
Start the game for the first time
Finish 20 levels
Finish 40 levels
Finish 50 levels
Finish the third Alice route
Finish the second Nicole route
NEW_ACHIEVEMENT_DESC_1_17
Finish the first Mary route
Finish the second Mary route
NEW_ACHIEVEMENT_DESC_1_20
Finish the second Charlotte route
Finish the third Charlotte route