Complete the Dawn of Ragnarök campaign (Dawn of Ragnarök)

Enter the Assassin Bureau in Francia (The Siege of Paris).

Complete 10 Rebel Missions (The Siege of Paris).

Kill an enemy with a scythe while wearing the full Reaper armor set (The Siege of Paris).

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

Draw Excalibur from the Stone

Assassinate an enemy from your horse

Reach maximum Infamy in the Rebel Missions (The Siege of Paris).

Complete three Tombs of the Fallen

Obtain Thor's Helmet

Complete your first Animus Anomaly

Spend your first Mastery point

Reach Vinland