Instructions
Press "Start Game" at the title screen and log in to your account when prompted.
Click the "Duel Menu" button on the main screen, and choose "Kaiba Corporation" from the "Duel Menu" options. All NPC duelists are accessed at the Kaiba Corporation screen.
Select Miss Shadow from the list of NPC duelists.
Summon monsters and traps aggressively during the battle. Miss Shadow uses the Master Disaster deck, a powerful beatdown deck that allows her to summon low- and mid-level monsters quickly. Her deck also contains several spells and traps that remove monsters from the field automatically, meaning you will need to resummon often.
Avoid taking a defensive posture. Beatdown decks such as the Master Disaster deck are designed to force opponents into using their monsters to defend and then overwhelming them. Miss Shadow's aggressive play style will tempt you to play defensively in an effort to make her run out of cards and give you the win by default. Unless you have an exceedingly powerful mill deck, this is a losing strategy.
Summon monsters with a higher attack rating than 1,500 as soon and often as possible. One of Miss Shadow's cards is the Deck Devastation Virus, which kills all monsters on the field with a 1,500 or less attack rating.