Crusader Kings II achievements

Kill a character with the Immortal trait.

Be Emperor of both Persia and Rajastan

As a Tribal ruler, gain a title you have a claim on by duelling the holder.

Successfully slander 20 people with one character

Play as three consecutive generations of empresses

Be King of Frisia and hold the Atlantic coast from Léon in Brittany to Jylland

As a King or Emperor, have one of your domain Counties under the influence of a successful Rain Dance.

Found a Legendary Bloodline while part of a Warrior Lodge.

Enforce peace for 6 or more vassals.

As a Muslim King or higher, become Grandmaster of the Assassins.

Become Emperor of Francia as Carloman, brother of Charlemagne

Play a game all the way through from 867 to 1453