50 Bazooka Rounds:
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When your strength is at '2′, climb a fence and press Left + I + II.
10 Super Grenades:
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When your strength is at '1′, climb a barricade and press
Down + Left + Run + II.
50 Flame Thrower Charges:
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Hold Up + I + II and press Run when parachuting at the start
of level 2 or level 5.
Fast Mode:
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At the title screen, Up, Down, Right, Right, I, I, II, Select, Run.
50 Shotgun Rounds:
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When your strength is at '2′, climb a fence and press Right + I + II.
Hover Mode:
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At the title screen, Down, Up, Left, Left, II, II, I, Select, Run.
Sound Test:
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At the title screen, press Up, then hold I + II + select.
10 Flash Bombs:
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When your strength is at '1′, climb a barricade and press Up +
Right + Run + II.