checked-no
=>Extra Characters: Beating the boss character in the final level of a
mission will unlock that character for use in the game. All five bosses
are unlockable this way.
=>Extra Single Player Maps: Clearing all the challenges for each map will
unlock an additional L map for the single player game. The Playground
challenges unlock Beach L, the Plaza challenges unlock Nature Park L, the
Training Room challenges unlock Playground L, and the Beach challenges
unlock Plaza L.
=>Gold Medals: It's noteworthy to point out that the gold medals you can
earn in the mission mode don't actually unlock anything.