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