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.
Win against the Snail five times
Beat the Toader mini-game!
Reunite with your best friend
Find the Twin's favorite doll
Burning rope
Cake and sweet craving
Beat the Maze mini-game!
Make the Guard fall asleep
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