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.
Return what you stole
Beat the Toader mini-game!
Find the Twin's favorite doll
Burning rope
Cake and sweet craving
Beat the Maze mini-game!
Make the Guard fall asleep
Finish Fran Bow
Electrocute the doctor three times
Find the picture behind the door
Light the candles
Give the robot rabbit three carrots
Afuga Merzenis
The Itwork computer crashes
Beat the Troll mini-game!
Kotrem is no longer divorced
Win against the Snail five times
Reunite with your best friend