The New Alliances Add-on for Surviving the Aftermath has 11 achievements.
Complete the Doomsday Bunker Project
Escape the harsh winter by fixing the train in Cold Rush
Survive in the Endless Winter scenario for 100 days
Survive until day 100 in a custom game
Complete all four covert mission types
Ally with a society
Have four embassies built at the same time
Form the federation