30 Lives
At the halfway point in the 3rd level, where the ship alternates
between dropping grenades and soldiers, stand all the way to the
left and aim your gun to the
right (You might want a turbo controller for this one). Fire to
the right and leave the game running. If you leave and come back
atleast a half hour later, you should have 30 lives on the counter.
Auto Reset
During a game press & hold START & SELECT.