Shadows Behind the Throne 2 achievements

Reduce the world's temperature to half what it was at the start of the game

Use a Saviour agent to stop an invasion on a nation with at least 10 locations

Win a Game

Use a vampire to drive a King, Queen, Empress or Emperor insane

Declare your nation to be a Dark Empire

Consume the last human city with the Unholy Flesh

Have your seeker agent learn the terrible truth

Have a Noble's soul break due to reaching 100% shadow

Reach the end of 'The Twins' Event Chain

Achieve victory without enthralling or creating any agents

Enthrall a noble with the Dark Heirophant

Have a merchant load and sell cargo, then spend the wealth