| Achievement | How to unlock
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| "Excellent" (30) | Complete the game on Expert difficulty in individual Quarters mode.
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| Battling Seizure Robots (10) | Playing from stage 1, defeat the battling robot.
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| Best Score Ever (25) | Earn 250 points (US) or 25,000 points (Japan) in a game.
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| Bongo's Angst (10) | Playing from stage 1, get Bongo to appear in 4 different levels.
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| Dysfunctional Family (10) | Play in a 4-player match with three other people.
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| Easier Than Arm Wrestling (10) | Defeat the Wrestler without any player dying.
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| Falling For Smithers (10) | Playing from stage 1, fall through the deck after Smithers.
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| Helper Monkey (10) | While performing a Team Attack, damage 25 enemies.
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| It Tastes Like Burning (10) | Hurt Smithers with one of his own bombs.
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| Like Taking Candy From a Baby (25) | Complete the game four times, once with each character.
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| Mr. Sparkle (25) | From stage 1, make it to the stage 3 bosses in Survival Mode with the Japanese ROM.
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| Release The Hounds (25) | Complete the game in 30 minutes or less.
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