What exactly are the requirements for unlocking Ninja?
I have them. The section unlocked for me after getting all Golds in the Extremes. I see a poster on another forum having issues unlocking them. They have Golds on all the base game Extremes, and they've beaten all the Stadium Finals and the Grand Finale track, and Ninja isn't unlocking for them. Is there some other requirement? Or is it possible a new bug got introduced where players have to get Golds on *all* Extremes in the game, i.e. including any DLC they own?