Have a Noble's soul break due to reaching 100% shadow
Enthrall a noble with the Dark Heirophant
Declare your nation to be a Dark Empire
Enthrall or create your first agent
Consume the last human city with the Unholy Flesh
Have your seeker agent learn the terrible truth
Have a merchant load and sell cargo, then spend the wealth
Achieve victory without enthralling or creating any agents
Use a vampire to drive a King, Queen, Empress or Emperor insane
Use a Saviour agent to stop an invasion on a nation with at least 10 locations
Reach the end of 'The Twins' Event Chain
Win a Game
Reduce the world's temperature to half what it was at the start of the game