Here is the full list of all 12 Smiling Girls achievements. It takes around 0-1 hour to unlock all of the achievements on Windows.
GameOn
GameOut
Genevieve Easy
Genevieve Normal
Genevieve Hight
Agnia Easy
Agnia Normal
Agnia Hight
Gaia Easy
Gaia Normal
Gaia Hight
Hera Easy