Instructions
Press "Pause" and then select "FAQs" to access the Great Maze map. The Great Maze map has green dots showing each door in the maze and white lines displaying where each of the doors lead. You have to access another map with green dots the doesn't show the white lines. The characters you have to face are behind the doors located on the map with green dots without the white lines.
Travel through the maze and follow the green dot without a white line. Enter the door surrounded by black smoke. Defeat the character inside of the door.
Go to the Jungle in the center of the Great Maze. This location is represented by a red dot on your map. Remember this area since you have to return here to enter the purple room. You cannot enter into the purple door just yet until you defeat each character.
Defeat each character around the map. Each character is a replica of the characters you encountered in the earlier levels.
Enter the purple door. Open the door and fight Tabuu. If you beat him, you beat the maze in "Brawl."