You can obtain B. Skull Dragon by entering 11901678 under the "Password" section. It can also be obtained by Fusing Red-Eyes B. Dragon and Summoned Skull.
You can fuse Red-Eyes Black Dragon with Meteor Dragon to make Meteor B. Dragon. To get Meteor B. Dragon as a card, you will need to A/S-POW the Meadow Mage. Mountain Mage, Heishin and Jono2 also give...
To get to the Labyrinth, you need to defeat at least two High Mages and obtain their Millenium Items. After you defeat them, if you go to the Dueling Grounds, Jono will alert you that Heishin and his...
You must defeat every enemy in free duel mode at least 100 times (excluding Duel Master K). Once you've done that complete the campaign mode. If you get an S-Pow or an S-Tec rating in the final duel...