C Falcon: Beat Normal Classic in less than 15 min.
Luigi: Beat Easy Classic Mode
Ness: Play 5 brawls.
Marth: Beat Classic At any Level.
Snake: Play 15 Brawls on Shadow Moses Island.
Sonic: Beat Classic mode with 10 different chars OR Beat The Subspace Emissary.
Wolf: Beat Adventure then Go Back into the Ruins to Fight him.
Toon Link: Beat Adventure then Go Back into The Forest to Fight him.
Jiggypuff: Beat Adventure Then go back into The Swamp to fight her.
R.O.B.: Play in the Subspace Emissary to Unlock.
Ganondorf: Beat Hard Classic as Zelda or Link.
Luigi: Beat Easy Classic Mode
Ness: Play 5 brawls.
Marth: Beat Classic At any Level.
Snake: Play 15 Brawls on Shadow Moses Island.
Sonic: Beat Classic mode with 10 different chars OR Beat The Subspace Emissary.
Wolf: Beat Adventure then Go Back into the Ruins to Fight him.
Toon Link: Beat Adventure then Go Back into The Forest to Fight him.
Jiggypuff: Beat Adventure Then go back into The Swamp to fight her.
R.O.B.: Play in the Subspace Emissary to Unlock.
Ganondorf: Beat Hard Classic as Zelda or Link.