INCREASE THE QUANTITY OF ITEMS IN YOUR INVENTORY AND ADD MORE MONEY TO CHARACTER (WITHOUT 'GAMESHARK')
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1. Go to the hallway that gives access to the other stages of the game.
2. Stop where moonlight (green) strikes the ground (carpet) as shown, and press START.
3. In the menu of items, both of utilities and equipment, hover over what you want to increase.
That way, it is not necessary to buy medicine, nor try to kill yourself to acquire more than one item in the most difficulty. Another advantage is in case you are in need of money. Just sell things by always remembering to leave at least one, to remake the glitch.