This is the list of all the unlockable characters in Super Smash Bros Brawl. Where there are more than one requirement listed, you only actually have to achieve one of them to unlock that character.
Captain Falcon
Requirements:
1) Clear Classic Mode on Normal difficulty in 12 minutes
2) Play 70 Versus mode matches
3) Complete SSE Level 20: Outside the Ancient Ruins
Falco
Requirements:
1) Clear 100-Man Brawl
2) Play 50 Versus mode matches
3) Complete SSE Level 18: The Swamp
Ganondorf
Requirements:
1) Clear Classic Mode on Hard difficulty as Link or Zelda
2) Play 200 versus mode matches
3) Get the Link and Zelda trophies SSE Level 30: Subspace (2)
Jigglypuff
Requirements:
1) After clearing SSE, clear Event Matches 1-20
2) Play 350 Versus Mode matches
3) Clear SSE, then play The Swamp to find a hidden door
Lucario
Requirements:
1) Complete all 5 Target Tests with any character
2) Play 100 Versus Mode matches
3) Clear SSE Level 21: The Glacial Peak
Luigi
Requirements:
1) Complete Classic Mode on Easy without continues
2) Play 22 Versus Mode matches
3) Clear SSE Level 29: Subspace
Marth
Requirements:
1) Play 10 Versus Mode matches
2) Clear Classic Mode
3) Clear SSE Level 8: Battlefield Fortress
Mr Game & Watch
Requirements:
1) Clear any level of Target Test with 30 characters
2) Play 250 Versus Mode matches
3) Clear SSE Level 25: Battleship Halberd Bridge
Ness
Requirements:
1) Play 5 Versus Mode matches
2) Reflect 10 projectiles
3) Clear SSE Level 29: Subspace
R.O.B
Requirements:
1) Get 250 different trophies
2) Play 160 Verses Mode matches
3) Clear SSE Level 27: The Subspace Bomb Factory (2)
Snake
Requirements:
1) Play 15 Versus Mode matches on Shadow Mosses Island
2) Play 130 Versus Mode matches total
3) Clear SSE Level 23: The Battleship Halberd Interior
Sonic
Requirements:
1) Complete Classic Mode with all other characters
2) Play 300 Versus Mode matches
3) Clear SSE Level 31: The Great Maze
Toon Link
Requirements:
1) Play 400 Versus Mode matches
2) After clearing SSE, go back to The Forest to find a secret door
3) After clearing SSE, clear Classic Mode with any character
Wolf
Requirements:
1) Clear Boss Mode with Fox or Falco
2) Play 450 Versus Mode matches
3) After clearing SSE, go back to The Ruins to find a secret door
