You need the multitap hooked up.
At the title screen, hold R on controller 5 (yes, controller 5).

            L E V E L   P A S S W O R D S

                   1-   2-   3-   4-   5-   6-
        Level 1   4554 6052 3452 1155 4253 1653
        Level 2   1504 2004 6404 2105 7204 2603
        Level 3   4545 1045 5442 1143 2243 1642
        Level 4   0513 4013 0412 3115 6213 3613
        Level 5   2525 7024 5424 1122 5225 7623
        Level 6   1563 4062 6463 5165 6262 5663
        Level 7   2533 7035 2432 1134 2234 7632

• At the beginning of any stage, you will be blinking with invincibility.
• Put down a bomb.
• As soon as it explodes, Press A button rapidly and move around the playing field.
• You'll destroy everything in your path.
• Do this until invincibility wears off.
• Make sure you quit before it does, or you'll get hit by the blast.