Crusader Kings II achievements

Own all the silk route ports in india as a European merchant republic.

As a steppe horde, conquer the whole steppe region.

As a Norse character, become King of Mongolia.

Start as the holder of Gotland and form the empire of Scandinavia.

Defeat a sibling in a war using the rival casus belli.

Hold any Emperor or King title as a Lombard after 1300

Sacrifice a King or Emperor tier character to Kali

Rule as Emperor with the Reformed Zun Faith

Convert both Rome and Constantinople to the same (Indian) religion

Start in Western Europe and completely conquer the region of Mongolia.

Build 3 fully upgraded silk road trade posts.

Be simultaneously at war with the Aztecs and the Mongols