Here is the full list of all 20 Edgar: Bokbok in Boulzac achievements worth 1,000 gamerscore.
Harvested 100 squashes
Harvested 50 squashes
Knocked 100 times at the door
Harvested 10 squashes
Read all the recipes
Saved the village
Assembled the three elements at the altar
Got the dog toy
Got the snakeskin boots
Retrieved the lobster press
Got the artichokes
Chose the right book in the mayor's office
Left the Factory
Got the cocktail from Nestor
Head to the village
Finished the gardening tutorial
Left your cabin
Harvest 500 squashes
Rob the key from Michelle, er, Sophie
Return to your Home, have a rest