Assist all of the wayward spirits

Obtain Ancient armor set

Kill all of Odin’s Ravens

Free all of the Dragons

Defeat all the powerful challenge enemies twice or more.

Defeat the nine Valkyries

Retrieve all treasure from the Workshop’s center chamber

Complete all of the Trials of Muspelheim

Explore all the Lake of Nine has to offer

Fully explore Veithurgard

Learn the languages of Muspelheim and Niflheim

Reach 150 kills in Rush Hour, in Adventure mode.

Sadist.