Complete all Roman collector challenges

Obtain all video fragments and watch the hidden truth video

Defeat all Alpha animals (Base game only)

Beat all the Orlog players

Complete Hamtunscire Arc

Complete "The Prophecy" storyline

Complete all the flytings

Assassinate 10 enemies in a row without triggering a conflict

Complete the Wincestre Arc

Collect 5 Treasure Hoard rewards (Base game only)

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

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

Reach Vinland