Go to the title screen and press Left (5 times), Up (5 times), Right (5 times), Down (5 times), Select (5 times). Now you have all levels and bonuses. To get a sound test press and hold A and press left or right
Bonus ATV course
Choose "Himalaya" track in easy setting. Go into the skeleton tunnel, take the alternate route to the left, and pick up the medallion.
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