Certain treasure that you find can be used to enhance your space suit, lets you discover new areas, or use sprays to battle enemies. Here is a full list of those special items, where to find them, what they do, and which boss you need to defeat to acquire it.
| Unlockable | How to unlock
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| Anti-Electrifier (Makes Your Suit Immune to Electricity) | Defeat the Giant Breadbug on Floor 6 of the Glutton's Kitchen.
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| Mega Tweeter (Increases the Range of Your Whistle) | Defeat the Ranging Bloyster on Floor 7 of the Shower Room.
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| Metal Suit Z (Increases Your Suit's Durability) | Defeat the Pileated Snagret on Floor 7 of the Snagret Hole.
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| Napsack (Take a Nap by Holding C, the Pikmin Will Carry You Back to Your Base) | Defeat the Burrowing Snagret on Floor 5 of the White Flower Garden.
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| Pluckaphone (Plucks Pikmin in the Ground by Whistling) | Defeat the Waterwraith on Floor 5 of the Submerged Castle.
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| Rocket Fist (Increases Punching Power) | Defeat the Mamuta Holding It on Floor 5 of the Frontier Cavern.
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| Rush Boots (Immunity to Blowhog's Wind and Increases Running Speed) | Defeat the Empress Bulblax on Floor 8 of the Frontier Cavern.
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| Scorch Guard (Makes Your Suit Immune to Fire) | Defeat the Emperor Bulblax on Floor 7 of the Bulblax Kingdom.
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| Solar System (Lights up Caves) | Defeat the Man-At-Legs on Floor 9 of the Subterranean Complex.
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| Sphere Chart (Unlocks the Awakening Wood) | Take it Back to the Research Pod on Floor 2 of the Emergence Cave.
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| Survey Chart (Unlocks the Perplexing Pool) | Take it Back to The Ship at the Awakening Wood.
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| The Key (Unlocks Challenge Mode) | Defeat Beady Long Legs on Floor 5 of the Citadel of Spiders.
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| Treasure Gauge (Beeps When You're Near Treasure) | Defeat the Empress Bulblax on Floor 5 of the Hole Of Beasts.
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| Ultra Bitter Spray (Increases Pikmin Speed and Power) | Found Scattered Above Ground At the Awakening Wood, Perplexing Pool, and Wistful Wild, Also Found n Eggs.
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| Ultra Spicy Spray (Freezes Enemies by Turning Them to Stone) | Found Scattered Above Ground At the Awakening Wood, Perplexing Pool, and Wistful Wild, Also Found n Eggs.
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