Crusader Kings II achievements

As a Muslim, crush a Decadence revolt

As a Zoroastrian, become the prophesied Saoshyant

As a vassal use a favor to change a law.

Rule the Empire of Britannia as a Hindu, Buddhist or Jain character

Convert Mecca to Hinduism, Buddhism or Jainism

Fund an immoral bishop and get him elected Pope

Be Emperor of both Persia and Rajastan

As a Jew, create the Kingdom of Israel

Starting in the "High Middle Ages" bookmark as Svend II of Denmark, become the King of England

Gain the Legendary Wisdom modifier

Have 6 close family members as friends

Kill a character with the Immortal trait.