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