Infinite POW ball (Japanese Version)
Area 7 has a separate building on the upper right. Stand in the middle of the building and press "up", you can enter a hidden communication room. Communication will tell you to knock on the right wall 5 times. After do it, you will hear the sound like get 1UP, then you can use the POW ball indefinitely(press "A" "B" at the same time).
Contributed By: sunye.
Obtain All Weapons (Japanese Version)
In Level 17's interrogation room, beat the prisoner 255 times and you'll receive all the weapons.
Contributed By: KeyBlade999.
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