Here is the full list of all 21 Randoville achievements.
Spend an in-game week
Catch 25 fishes
Roll two 20s in a row
Throw the Dice 100 times
Start fishing
Build 50 meters of fence
Build 10 Fields
Throw the Dice 50 times
Regress for the first time
Build 5 Zones
Have 10 or more peasants
Plant 100 trees
Delete 100 trees
Get 100 stone from clicking rocks
Throw the Dice 10 times
Get your first 20
Grab 100 lootables
Spend an in-game month
Throw the Dice 250 times, wow
Nice progress, but it's not the end
You did it, Legend