Empty all your nitro for the first time from full to empty

Upgrade a car once

Complete your first race in Arena Mode

Destroy your first opponent (offline)

Purchase 10 Racer vehicles

Reach Racer Rank 20

Hit a X 10 Multiplier

Retrieve all treasure from the Workshop’s center chamber

Defeat the nine Valkyries

Obtain Ancient armor set

Kill all of Odin’s Ravens

Collect all of the Artifacts