Here is the full list of all 20 Edgar - there are Bokbok in Boulzac achievements.
Leave the factory
Let Nestor brew a coctail for Carlos
Head to the village
Complete gardening tutorial
Leave your cabin
Harvest 10 squashes
Harvest 50 squashes
Harvest 100 squashes
Harvest 500 squashes
Knock 100 times at the door
Chose the right book in the mayor's office
Rob the key from Michelle, er, Sophie
Returned home to have a rest
Get the artichokes
Retrieve the lobster press
Get the snakeskin boots
Get the dog toy
Assemble the three elements at the altar
Save the village
Read all the recipes