| Achievement | How to unlock
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| 6 Easy Pieces | Collect all 6 bonus items in Stage 1.
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| Akumu | Clear the game (no continues or Skull Mode)
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| Almost Kid | Game Over on the Stage 5 boss.
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| Another Brick in the Wallpaper | Change the screen border artwork.
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| Bookworm | Read the How to Play guide.
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| Broken Butterfly | Clear Stage 1.
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| Charlotte's Web | Clear Stage 4.
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| Florist | Don't kill any lilies in Stage 3.
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| Get Rich Quick | Reach x24 multiplier on Stage 1.
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| Glass Half Full | Collect 15 bonus items.
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| Insecticide | Clear Stage 4 without losing a life.
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| Joker | Soul Drain all the bats in Stage 5.
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| Mothra | Clear the game (no Skull Mode)
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| Mushroom Maze | Clear Stage 2.
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| Neptune's Palace | Clear Stage 3.
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| Over the Moon | Clear Stage 5.
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| S.O.S. | Clear Stage 5 without Soul Draining an enemy.
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| That's No Moon! | Don't bomb on the Stage 5 boss.
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| The 1CC Club | Clear the game (no continues)
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| The Connoisseur | Get over 999 giant skulls on any stage.
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| The Full Extent of the Jam | Start a game with the screen rotated.
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| The Killing Jar | Soul drain all large butterflies on Stage 1.
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| The Mechanic | Score over 6,000,000 points.
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| The Professional | Score over 12,000,000 points.
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| The Shining | Collect all 30 bonus items.
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| The Student | Score over 3,000,000 points.
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| The Thin Black Line | Start a game with scanlines turned on.
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| Too Late | Let any boss time out.
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| Training Wheels | Continue on Stage 1.
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| With Treasure | Collect all 1-UP and bomb items.
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