Krazy Ivan Cheats

Level select:
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Highlight Russia and press Right at the level select screen
with the globe. Hold X + Down/Left before the Japanese
mission details appear. The globe will begin to bounce
through the levels. Release the buttons when a specific
level is displayed to play that stage.
True ending:
As the shield generator is blown up on the final level
(Japan), walk into the center of the explosion for a hidden
level and the true ending of the game.