Here is the full list of all 40 King and Kingdoms achievements.
Plunder 100000000 resources
Plunder 10000 cities
Attack 250 players
Destroy 1000000 units as attacker
Destroy 100000 units as defender
Lose 100000 units
Kill 500 Noblemen
3000 Battles fought
Destroy 10000 buildings
Attack 1 time
Destroy 50 enemy units
Attack with 12 different unit types at once
Collect 10000000 points
Own a village with 15000 points
Own 50 city with 15000 points
Take over 100 cities in 1 hour
Destroy 10000 Wall levels
Be one of the three first tribes to own 5000 cities
Lose 70000 units as a supporter
Recruit 1000000 infantry units in total
Recruit 1000000 cavalry units in total
Recruit 1000000 artillery units in total
Own 15 Hearth of Worship buildings at max level
Own 100 Walls at max level
Own 100 Tavern at max level
Own 100 Barrack at max level
Own 100 Houses at max level
Own 100 Hall of Orders at max level
Counteract 1000 spying attempts in total
Make a total of 1000 successful spying attempts
Product 1000 coins in total
Make war a total of 1000 battles with berserkers
Make defence a total of 1000 battles with trebuchet
Send 10000000 resources to other players
Accept 1000 trades
Sell 10000000 resources
Buy 10000000 resources
Spend 10000 resources
Have a total resources income of 1000
Recruit 1000000 units in total