At the New Game/Continue screen enter the following codes:
Code Effect Up, Right, Down, Left, Run Four screen mode Up, Left, Down, Right, Run Level Select Up, Up, Down, Down, Right, Left, Right, Left, Run Perform Killer Punch Anytime II, Select, Up, Run Sound test Up, Down, Left, Right, 2, 2, 2, Run. Special Mode Up, Up, Down, Down, Left, Right, Left, Run View ending
Reach the last boss (Mr. X) and let him defeat you until you have 3 continues left. On the "New Game/Continue" screen, hold Run and press Select to reset the game. If done right, you'll be right back at the Continue screen and it will say "Level 2" on top, which means the game will be in hard mode.
Contributed By: ReyVGM.
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