All weapons:
Successfully complete the level with the Boss that has the huge claw two timesto get all the weapons that you have picked up so far.
Bonus fighters:
Unlock fifteen or more secrets and complete game play under any difficulty level to fly in one of the small Earth fighters. Complete the game under the hard difficulty level without continuing more than two times to fly in one of the Moon fighters from the final level.
Gallery option:
Complete game play with a high ranking to access a "Gallery" option from the main menu. Select it to view various graphics depicting the ships, weapons, and battles in the game.
Start with gunpods:
Begin game play and reach a point where various gunpods have already been obtained. Intentionally lose the game and use all remaining lives. Allow the timer to reach zero on the continue screen. Allow the title screen to reappear and select "Game Start". Select a ship and equip it as desired with the gunpods that are now available. The selected gunpods will also reappear automatically as a standard weapon after a life is lost during the next game.
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