| Challenge | How to unlock
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| - Beat the game without falling into any holes.
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| - Beat the game without continuing.
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| - Beat a boss without being damaged.
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| - Jump 50 or less times in a stage.
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| - Every shot with the Mega Buster must hit an enemy throughout the game.
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| - Beat the game by only using the minimum amount of weapon energy.
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| - Beat the game one a day (at least) for 3 straight days.
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| - Visit all stages twice and beat the game.
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| - Beat a boss only by using the Mega Buster.
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| - Beat 4 stages when using the same special weapon.
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| - Beat 4 stages without the use of a special weapon.
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| - Hit a boss at least once with all of the special weapons.
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| - Beat the gane 5 times within a day, a day being from 12:00 AM to 11:59 PM.
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| - Get to a boss's room without being hurt at all.
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| - Beat 8 bosses without the helmet.
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| - Get to a boss's room without shooting any weapons.
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| - Beat the game without dying.
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| - Beat the game in under 1 hour.
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| - Beat all bosses while one pixel of your health remains.
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| - Fight a boss for a length of ten minutes.
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| - Beat the game without picking up any more than 8 energy pellets.
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| - Finish the game without getting damaged.
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| - Use 500 or more Buster shots throughout the whole game.
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| - Beat the game without the use of Energy or Mystery Tanks.
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| - Beat the game by defeating only bosses and minibosses.
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| - Defeat Concrete Man in under 10 seconds.
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| - Defeat Galaxy Man in under 10 seconds.
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| - Defeat Hornet Man in under 10 seconds.
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| - Defeat Jewel Man in under 10 seconds.
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| - Defeat Magma Man in under 10 seconds.
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| - Defeat Plug Man in under 10 seconds.
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| - Defeat Splash Woman in under 10 seconds.
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| - Defeat Tornado Man in under 10 seconds.
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| - Beat the final boss in under 3 minutes.
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| - Purchase 30 items or more.
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| - Reach a boss's room without letting go of the D-Pad.
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| - Beat one boss while one pixel of your health remains.
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| - Beat the game in under 1.5 hours.
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| - Defeat all eight bosses using the Mega Buster.
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| - Beat the game in under 2 hours.
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| - Beat the game a single time.
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| - Defeat all types of enemies.
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