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