Yu-Gi-Oh! World Championship 2008 Cheats

Unlockables
Complete these tasks during World Mode to unlock these duelists:

Curse Of Darkness in World Championship Mode: Talk to Gigobyte then defeat Curse of Darkness in world 1
E- Hero Lady Heat: Beat E-Hero Knospe 5 times
King of the Skull Servants: Beat Skull Servant 5 times
Maximillion Pegasus in World Championship Mode: Defeat all 5 Guardian Sphinx challenges in World 2
Syrus Truesdale in World Championship Mode: Defeat all 5 Guardian - Embust challenges in world 1
Yellow Duel Disk: Defeat all World 1 opponents 2 times

Unlocking Amazoness Card Set and Amazoness Duel Disk
In Duel World go to the Colosseum and defeat Amazoness Paladin using all of the structure decks to unlock these.

The Amazoness Card Set includes [1 of each]:

Amazon Archer, Amazoness Blowpiper, Amazoness Chain Master, Amazoness Fighter, Amazoness Paladin, Amazoness Swords Woman, Amazoness Tiger, Amazoness Spellcaster, and Amazoness Archers.

Amazoness Card Set: Defeat Amazoness Paladin using all structures decks
Amazoness Duel Disk: Defeat Amazoness Paladin using all structures decks