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