| Challenge | How to unlock
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| Air Shoes | Beat the game without falling into any holes.
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| Almost Invincible | Beat the game without continuing.
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| Blue Bomber | Beat a boss without being damaged.
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| Bunny Hop | Jump 50 or less times in a stage.
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| Bust A Move | Every shot with the Mega Buster must hit an enemy throughout the game.
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| Conqueror | Beat 100 enemies.
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| Conservationist | Beat the game by only using the minimum amount of weapon energy.
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| Daily Dose | Beat the game one a day (at least) for 3 straight days.
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| Destroyer | Beat 1,000 enemies.
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| Double Trouble | Visit all stages twice and beat the game.
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| Eco Fighter | Beat a boss only by using the Mega Buster.
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| Encore | Beat 4 stages when using the same special weapon.
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| Fantastic 9 | Earn 9 lives.
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| Farewell to Arms | Beat 4 stages without the use of a special weapon.
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| Fully Unloaded | Hit a boss at least once with all of the special weapons.
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| Gamer's Day | Beat the gane 5 times within a day, a day being from 12:00 AM to 11:59 PM.
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| Hard Rock | Get to a boss's room without being hurt at all.
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| Headbanging | Beat 8 bosses without the helmet.
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| Heavy Metal | Get to a boss's room without shooting any weapons.
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| Invincible | Beat the game without dying.
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| Jitterbug | Beat the game in under 1 hour.
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| Last Man Standing | Beat all bosses while one pixel of your health remains.
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| Marathon Fight | Fight a boss for a length of ten minutes.
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| Mega Diet | Beat the game without picking up any more than 8 energy pellets.
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| Mr. Perfect | Finish the game without getting damaged.
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| Mr. Trigger Happy | Use 500 or more Buster shots throughout the whole game.
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| No Coffee Break | Beat the game without the use of Energy or Mystery Tanks.
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| Pack Rat | Collect 999 screws.
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| Peacekeeper | Beat the game by defeating only bosses and minibosses.
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| Quick Draw C | Defeat Concrete Man in under 10 seconds.
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| Quick Draw G | Defeat Galaxy Man in under 10 seconds.
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| Quick Draw H | Defeat Hornet Man in under 10 seconds.
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| Quick Draw J | Defeat Jewel Man in under 10 seconds.
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| Quick Draw M | Defeat Magma Man in under 10 seconds.
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| Quick Draw P | Defeat Plug Man in under 10 seconds.
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| Quick Draw S | Defeat Splash Woman in under 10 seconds.
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| Quick Draw T | Defeat Tornado Man in under 10 seconds.
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| Quick Draw X | Beat the final boss in under 3 minutes.
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| Shop A Holic | Purchase 30 items or more.
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| Speed Metal | Reach a boss's room without letting go of the D-Pad.
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| Survivor | Beat one boss while one pixel of your health remains.
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| Tango | Beat the game in under 1.5 hours.
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| Truly Addicted! | Beat the game 10 times.
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| Truly Hardcore! | Beat the game 30 times.
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| Trusty Sidearm | Defeat all eight bosses using the Mega Buster.
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| Valued Customer | Buy all items.
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| Vanquisher | Beat 500 enemies.
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| Waltz | Beat the game in under 2 hours.
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| Whomp Wily | Beat the game a single time.
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| World Warrior | Defeat all types of enemies.
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