Here is the full list of all 13 Sakura Sadist achievements. It takes around 0-1 hour to unlock all of the achievements on Windows.
Nobody would have expected that, huh?
Nobody knows you better than them
Unusual mature but maybe the right choice
It's true love
You might have fallen for her mask
Now that you know the truth
Get your reward for behaving
Dark secret
Or the right opportunity?
It really was an accident
Better than unknown sender
Unusual Maid Meeting
Too good to be true