Super Smash bros hints.

[Carone404]

Unlock Captain Falcon
Beat the 1-Player game with any character on any diffculty in under 20 minutes. You will then fight Captain Falcon; if you win, you can play as Captain Falcon.

Unlock Jigglypuff
Beat the 1-Player game with any character on any difficulty. You will then fight Jigglypuff; if you win, you can now play as Jigglypuff

Unlock Luigi
Beat Bonus Practice 1 with all 8 of the original characters. This can be done either in practice or in the actual 1-player game.

Unlock Ness
Beat the 1-Player game with any character on Normal difficulty with 3 lives, without continuing. You will then fight Ness; if you win, you will be able to play as Ness.