Here is the full list of all 20 Kingdoms & Lords (Windows) achievements worth 200 gamerscore.
Complete the tutorial and the mission "The First Visit."
Own all of the Kingdom buildings.
Win 50 one-on-one battles.
Defeat all the bosses.
Wipe out shadowy areas.
Successfully invade friends' kingdoms 100 times.
Have 10 campfires on the map.
Defeat The Stygian Witches.
Defeat General McCallister.
Defeat Lady Bloomdale.
Defeat The Evil Monk.
Defeat Duke of Cowerdon.
Lose one fight.
Defeat Lady of the Coast.
Defeat Barbarian General.
Raise the population to 150.
Establish your defensive line.
Win the first fight.
Successfully resist invasion 100 times (includes helping friends).
Have more than 10 friends.