Here is the full list of all 11 Fort Boyard achievements.
Complete all the challenges.
Complete adventure mode and collect at least 5,000 Boyards.
Complete adventure mode without failing a single challenge.
Complete heroic adventure mode and collect at least 5,000 Boyards.
Complete all the challenges on hard mode.
Collect more than 15,000 Boyards in the treasure room.
Drive 5km by car.