Start the game, take all the items on the table, exit the lab and enter the Nunnery directly north. Once in the Nunnery, take the [Ixmol Jewel] being held by the statue. Now, select WASH the [Ixmol Jewel], then PUT [Sword], then WASH [Lighter]. When you see the message "Nothing has changed.", hold Select + Start and press A. If done right, the numbers "3 00" will appear. Use the buttons below to control the numbers. The "3" controls the areas and the "00" controls the items.
To get to the end of the game, enter this case sensitive password:
Press and hold A & B and press Reset. If done right, you should get the soundtest.