Crusader Kings III achievements

Visit ten Kingdom Tier Vassals on a Grand Tour

Succeed at a Legendary Hunt

Finish all tracks in the Hastiluder Trait

Have a max rank Acclaimed Knight with the Warrior of the Faith Trait

Starting as a member of the Umayyad Dynasty, hold the Empire of Arabia and the Sunni Caliphate

As a Scottish character, complete a Legend claiming your descent from Ancient Egypt

Manage to make your Legend Protagonist a Saint

Adopt the Administrative Government via Decision

Successfully host a Murder Feast or Bloody Wedding

Have one of your Lowborn Knights win a Grand Tournament Joust, then land them

Successfully claim your Liege's title while having a higher Legitimacy Level than them

Start as an uninvolved character, become involved and end the Iberian struggle.