Yu-Gi-Oh! Worldwide Edition: Stairway to the Destined Duel Tips

Good Stratergy
Here is a good stratergy to use.

Insect Barrier
DNA Surgery
Eradicating Aerosol
Mask of Accursed
Mask of Dispell
and healing cards

Use DNA Surgery and change the type to insect and than play Insect Barrier to stop ur opponents from attacking also use Eracading Aerosol to destroy ur opponents monsters also have cards like Giant Soilder of Stone, Mystic Elf, Millenium Shield, etc to defent and use the 2 mask cards mention in the list above to deal damage to your opponents (this workds well on kaiba!)