Here is the full list of all 9 My Lady achievements. It takes around 0-1 hour to unlock all of the achievements on Windows.
You began your story...
You chose to wear white...
You chose to wear red...
Manners are often overlooked...
The girl marries her prince. Checkmate.
The girl unties her ribbon from her neck. Forfeit.
The girl chooses the prince and the pauper. Stalemate.
The girl gets trapped in the glass case. Knight takes Bishop.
The lady locks the girl in her tower. Queen takes Bishop.