Here is the full list of all 100 Knights of Honor II: Sovereign achievements.
Win a Grand Campaign after starting with a single-province-sized kingdom.
Win a game by developing all advantages.
Lead an alliance of at least 3 kingdoms.
Have at least 3 pagan beliefs promoted at the same time.
Help your knight escape from a dungeon by using a Spy.
Establish a colony.
Reach 100 piety/faith/tradition income.
Send gold to another kingdom while playing as Leinster.
Execute 10 prisoners in a single game.
Make all Upgrades of a Royal Palace.
Make all Upgrades of a Cathedral or a Grand Mosque.
Reach 400 commerce.
Make all Upgrades of a University or a Madrasah.
Make all Upgrades of a Trade Port.
Produce Maps.
Fully develop an advantage.
Reach 150 food production.
Have 6 marshals at the same time in your royal court.
Sign 50 trade agreements.
Win a Peasant’s Rush game by reaching the target kingdom’s size.
Reach 100 books income.
Have a non-Marshal (nor Shaman) knight lead an army.
Organize a prison revolt.
Win a War for Goods game by producing the target amount of goods.
Lose a level 15 character.
Pillage 15 settlements in a single game.
Win a naval battle.
Reach the west end of the known world.
Reach the maximum level with all of your court knights.
Fail an Emperor of the World claim.
Reach 500 gold income from trade.
Reach 100 levies income.
Win the game.
Win a Greedy Kings game by collecting the target amount of gold.
Have the opinions of all society classes reach maximum values at the same time.
Have one of your towns become a trade center.
Declare war on a kingdom with which you’ve signed a non-aggression pact.
Hire knights in each slot of your royal court.
Provoke war between two kingdoms with a Spy action.
Become a Great power.
Execute or assassinate a king.
Destroy a kingdom.
Have your king lead a crusade.
Start a war by sending or refusing a territorial claim.
Use all building slots in a town.
Reach 200 gold income.
Defeat a rebellion by force.
Overtake a foreign province.
Reach the maximum level with one of your knights.
Top a ranking.
Start a multiplayer game.
Support another player in a battle.
Claim independence.
Instigate a crusade.
Defeat a crusader army marching against you.
Destroy the kingdom of another player.
Participate in a battle, in which 3 other kingdoms are involved.
Pick a new kingdom in a multiplayer game after your first one was destroyed.
Assassinate a knight of another player with a Spy.
Have an army reach 7,000 manpower.
Complete a Scholar’s journey.
Top all 3 Conquest-related rankings at the same time.
Top all 3 Wealth-related rankings at the same time.
Top all 3 Culture-related rankings at the same time.
Top all 3 Society-related rankings at the same time.
Top all 3 Politics-related rankings at the same time.
Have a cleric of yours become the Pope.
Have the Ecumenical patriarch as a knight in your court.
Establish a caliphate.
Claim autocephaly.
Destroy the Papacy.
Win Destroy kingdom by destroying the target kingdom.
Win a “First blood” game by destroying an opponent.
Win a game by becoming the Emperor of the World.
Top all rankings at the same time.
Win a Grand Campaign in under 5 in-game hours.
Own 100 provinces.
Hold Constantinople, Mecca and Rome at the same time.
Change your kingdom's religion twice in a single game.
Refuse peace offer when you have only one town, that is being besieged.
Initiate break siege with your king from within a town.
Become a vassal.
Declare independence while playing with Scotland.
Adopt Heroes and Battles beliefs.
Declare war on Salamanca.
Have your army killed by the arrows of a nearby town or castle.
Own 5 trade centers at the same time.
Gain 20 provinces via diplomacy.
Conquer 250 provinces by force.
Convert 100 provinces to your kingdom’s religion.
Pillage 100 settlements.
Actively end disorder in 200 provinces.
Win 1000 battles.
Destroy 50 kingdoms.
Using a diplomat, improve your relations with other kingdoms 1,000 times.
Vassalize 50 kingdoms.
Bribe 100 knights.
Import 20 goods.
Adopt Oceans and Raids beliefs.
Have 3 or more rebellions simultaneously.