Unlockable How to Unlock
Unlockable Modes:
All-Star Mode : Unlock all the hidden characters
Boss Battle Mode : Complete the Subspace Emissary
Unlockable Stages:
Luigi's Mansion: Use Luigi in brawl 3 times
Jungle Japes : Play on any Melee stage 10 times in VS Mode
Pokémon Stadium : Play on Pokémon Stadium 2 10 times in VS Mode
Hanenbow : Complete Event #28
Mario Bros: Beat Challenge #19
Great Sea: Unlock Toon Link
Big Blue (Melee) : Brawl as Captain Falcon 10 times
Spear Pillar : Clear stage #25 in Event Mode
Green Hill Zone : Unlock Sonic
Flat Zone 2 : Unlock Mr. Game & Watch
Green Greens : Fight as Kirby in VS mode 20 times
75m : Brawl as Donkey Kong 20 times