If you can't beat the Great Maze in Super Smash Bros. Brawl, you should read this.

You will have to battle every character you have encountered in Subspace. To find them, look on the map of the Maze and keep walking to the green dots.[The green dots are entrances.] Keep entering them.Eventually, an entrance you go through will be to battle a character.

Keep doing these instructions until you have beaten all characters.