There are challenges such as:
- Clear classic with all fighters
- Win smash run with all fighters
- Clear solo 100-man smash with all fighters
- Clear all-star with 15 fighters
My question is, how do I know if I've completed it or not? It seems that even if I fail, I get a score assigned, so there seems to be no simple indicator of whether or not I've completed a particular game mode with any given fighter.