Instructions
Complete all of the basic cups offered to unlock the Pain and Panic Paradox Cup. The first battle, the basic Pain and Panic Cup, opens when you complete Disney Castle. The Cerberus Cup opens after completing Halloween Town, Agrabah and Pride Lands. Titan Cup opens after you defeat the Olympus Coliseum boss. To get the Goddess of Fate Cup, beat all of the other cups and defeat Xemnas for the first time in Castle Oblivion.
Level your forms, such as wisdom and valor, until they reach level five to unlock the Cerberus Paradox Cup. Forms level up as you use them.
Get your summon level to at least five to unlock the Titan Paradox Cup. Summons gain experience whenever you call them into battle.
Complete the second half of the "Space Paranoids" level and raise your summon and form levels to seven. In the Underworld, go through the main door and follow the path to reach Hades' chamber. Talk to him to access the list of paradox cups.
Win all of the unlocked paradox cups to unlock the final battle, the Hades Paradox Cup. Beating the Hades Paradox Cup is required to unlock a secret video that plays at the end of the game.