Successfully complete the hardcore part of career mode.
At the main menu, press B, X, R, L, Right. If you entered the code correctly, the lower left corner of the screen will flash and the message "Your head expands" will appear.
At the main menu, press Up(2), Y(2), X(2). If you entered the code correctly, the lower left corner of the screen will flash and the message "Bouncy, bouncy" will appear.
Press Left, Right, Up, Down, B(3) at the main menu. The lower left corner of the screen will flash to confirm correct code entry.
Press L, R, Z, L, R, Z at the main menu. The lower left corner of the screen will flash and a message will appear to confirm correct code entry. Repeat the code to disable its effect.
At the main menu, press Z, X, Z, X. If you entered the code correctly, the lower left corner of the screen will flash and the message "Tag you're it" will appear.
At the main menu, press L, Z, Left, Right, B(2). If you entered the code correctly, the lower left corner of the screen will flash and the message "Drink me" will appear.
Press Down(3), L, R, Z at the main menu. The lower left corner of the screen will flash to confirm correct code entry.
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