Get a Specialist-based medal that requires 3 or more rapid kills while using any Specialist Weapon.

Obtain Thor's Helmet

Complete the Asgard and Jotunheim quests

Assassinate an enemy from your horse

Successfully pass close to a guard in a distrust area by blending with a group of monks

Ram and destroy 5 boats in under 2 minutes with your longship (Base game only)

Reach Vinland

Swim a total of 3km with the horse

Complete 3 Cairn challenges

Create a Jomsviking

Get thrown 30 meters away by a destroyer or a housecarl

Equip 8 abilities

Assassinate 10 enemies in a row without triggering a conflict