The Svardilfari, Clan of the Horse Add-on for Northgard has 6 achievements.
Control 5 upgraded towers lvl 2
Build 2 relics in the same game
Win with the Clan of the Horse
Get 50 Victories with Clan of the Horse
Build the Relic of Dainsleif & Tyrfing
Finish a Conquest with the clan of the Horse