Here is the full list of all 18 Fran Bow achievements. It takes around 10-12 hours to unlock all of the achievements on Windows.
Beat the Toader mini-game!
Find the Twin's favorite doll
Reunite with your best friend
Cake and sweet craving
Beat the Maze mini-game!
Burning rope
Make the Guard fall asleep
Win against the Snail five times
Return what you stole
Afuga Merzenis
The Itwork computer crashes
Electrocute the doctor three times
Beat the Troll mini-game!
Finish Fran Bow
Kotrem is no longer divorced
Give the robot rabbit three carrots
Light the candles
Find the picture behind the door