Yu-Gi-Oh! The Eternal Duelist Soul Cheats

How to get the next level:)

Second level:) Beat all enemies in the first level two times.
Third level:) Beat all enemies in the second level three times.
Fourth level:) Beat all enemies in the third level four times.
Fifth level:) Beat all enemies in the fourth level five times.

Get blank characters:)
Beat all enemies in the fifth level to access the blank characters.
 

Get a black Skull Dragon:)
Black Skull Dragon is included in the Gate Guardian piece's pack.
 

The Gate Guardian:)
To get the Gate Guardian, you first must obtain the Blue Eyes Ultimate Dragon pack. After you do so, Gate Guardian will be a common as well as Blue Eyes Ultimate Dragon, Tri-Horned Dragon, and Meteor Black Dragon.
 

Get the God Card Ra:)
The God Card Ra can only be acquired by getting it in the Monthly Yu-Gi-Oh! Magazine.

Unlock Pegasus:)
Get the Toon World card and have access to the fifth level.

Unlock Simon:)
By winning the tournament in November (in game time)

Unlock Grandpa:)
Beat Simon once.

Faster duels:)
Press and hold L + R while in the paper, rock, scissors game which decides who will start. Release the buttons when the duel begins.

Dueling speed:)
To speed up the dueling rate and the different phases, press and hold B.

Dark Magician Girl Card:
To get the Dark Magician Girl card, you must either get it in Weekly Yu-Gi-Oh!,trade for it, or get it in the GReen Millenium Puzzle Pack.
User Cheat by adam200

Here are the card passwords:)