At the Password Screen press Left, Up, C-Down, C-Left, C-Right, C-Up, C-Left, Down. Choose the "Start" option to display a cheat menu with unlimited lives, play as monster, and level select options.
Start a new game with Nadia. As soon as the game starts, do the following. At the same time push and hold: Up+B+A+C-Left+C-Down. If done correctly (remember to push and HOLD), Nadia should jump forward and land quite weird...her upper body will be bent awkwardly. It's different every time you do it.
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