Here are some cheats and tips for the game N20.
Infinite Lives P1
8011b3540103
8011b36c0103
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Infinite Special Weapon Ammo & Firewalls P1
8011b2120a63
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Infinite Special Weapon Ammo & Firewalls P2
8011b2930a63
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Infinite Shields P1
8011b1fc1117
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Infinite Shields P2
8011b27c0ffa
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Driller Counter
8011b4880e60