Here is the full list of all 100 Knights of Honor II: Sovereign achievements.
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 Trade Port.
Top all 3 Culture-related rankings at the same time.
Make all Upgrades of a Cathedral or a Grand Mosque.
Have the opinions of all society classes reach maximum values at the same time.
Reach the maximum level with all of your court knights.
Make all Upgrades of a University or a Madrasah.
Reach 400 commerce.
Establish a colony.
Lead an alliance of at least 3 kingdoms.
Use all building slots in a town.
Have your king lead a crusade.
Participate in a battle, in which 3 other kingdoms are involved.
Reach 100 books income.
Produce Maps.
Start a war by sending or refusing a territorial claim.
Fully develop an advantage.
Execute or assassinate a king.
Establish a caliphate.
Declare war on a kingdom with which you’ve signed a non-aggression pact.
Lose a level 15 character.
Fail an Emperor of the World claim.
Reach 500 gold income from trade.
Have a non-Marshal (nor Shaman) knight lead an army.
Execute 10 prisoners in a single game.
Reach 150 food production.
Top all 3 Wealth-related rankings at the same time.
Reach 100 levies income.
Top all 3 Society-related rankings at the same time.
Have one of your towns become a trade center.
Initiate break siege with your king from within a town.
Have the Ecumenical patriarch as a knight in your court.
Reach 200 gold income.
Pillage 15 settlements in a single game.
Become a Great power.
Top a ranking.
Destroy a kingdom.
Defeat a rebellion by force.
Reach the maximum level with one of your knights.
Have your army killed by the arrows of a nearby town or castle.
Complete a Scholar’s journey.
Overtake a foreign province.
Hire knights in each slot of your royal court.
Start a multiplayer game.
Help your knight escape from a dungeon by using a Spy.
Organize a prison revolt.
Provoke war between two kingdoms with a Spy action.
Support another player in a battle.
Claim independence.
Instigate a crusade.
Defeat a crusader army marching against you.
Destroy the kingdom of another player.
Win a naval battle.
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.
Top all 3 Conquest-related rankings at the same time.
Top all 3 Politics-related rankings at the same time.
Reach 100 piety/faith/tradition income.
Have a cleric of yours become the Pope.
Claim autocephaly.
Destroy the Papacy.
Have at least 3 pagan beliefs promoted at the same time.
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.
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.
Become a vassal.
Declare independence while playing with Scotland.
Adopt Heroes and Battles beliefs.
Send gold to another kingdom while playing as Leinster.
Declare war on Salamanca.
Reach the west end of the known world.
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.
Sign 50 trade agreements.
Vassalize 50 kingdoms.
Bribe 100 knights.
Import 20 goods.
Have 6 marshals at the same time in your royal court.
Adopt Oceans and Raids beliefs.
Have 3 or more rebellions simultaneously.
Win a War for Goods game by producing the target amount of goods.