Complete all of the Trials of Muspelheim

Retrieve all treasure from the Workshop’s center chamber

Fully upgrade your rage

Complete a playthrough on Ultimate difficulty

Get Spectacular or better in a Taskmaster Bomb Challenge

Complete the Screwball chase

Complete the "Aiding a Human" mission

Get Spectacular or better in all Screwball Challenges

Complete the "Old Friends" mission

Get Spectacular or better in all Screwball Challenges

Take down each Hammerhead Front

Complete the "Bring the Hammer Down" mission

Complete the "Blindsided" mission