Super Smash Bros. Brawl (Wii)

Unlock Ness:
Play five matches in Brawl
Reflect 10 projectiles
Get Ness to join your party in The Subspace Emissary

Unlock Marth:
Play 10 brawls
Finish Classic mode on any difficulty level • Get Marth to join your party in The Subspace Emissary

Unlock Luigi:
Play 22 brawls
Beat Classic with no continues
Get Luigi to join your party in The Subspace Emissary

Unlock Falco:
Play 50 brawls
Clear the 100-Man Brawl
Have Falco join your team in The Subspace Emissary

Unlock Captain Falcon:
Play 70 Brawls
Beat Classic Brawl Mode on the Normal difficulty setting or greater in less than 12 minutes
Get Captain Falcon to join your party in The Subspace Emissary

Unlock Mario Bros. Stage:
Complete Event 19: Wario Bros.

Unlock Green Hill Zone:
Appears after you unlock Sonic.

Unlock Luigi's Mansion:
Play as Luigi in three brawls

(supplied by: Harley777)