| Unlockable | How to unlock
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|---|
| 3D Glasses | Collect all acorns in World 8 boss
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| Afro | Collect all acorns in World 7 stage 1
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| Angel Costume | Clear World 4 boss in Mirror Mode
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| Antenna | Beat the World 8 boss
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| Big Pot | Clear World 2 stage 2 in Mirror Mode
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| Bird's Nest | Beat the World 4 boss
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| Blue Bucket | Clear World 4 stage 1 in Mirror Mode
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| Blue Ribbon | Clear World 3 stage 2 in Mirror Mode
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| Cake | Clear World 6 boss in Mirror Mode
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| Carrot | Clear World 1 boss in Mirror Mode
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| Chef's Hat | Beat the World 6 boss
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| Cool Unit | Collect all acorns in World 8 stage 2
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| Crown | Clear World 7 boss in Mirror Mode
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| Cute Sunglasses | Collect all acorns in World 4 boss
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| Deluxe Mask | Clear World 8 boss in Mirror Mode
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| Devil Horns | Clear World 5 boss in Mirror Mode
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| Drill | Clear World 7 stage 2 in Mirror Mode
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| Eye Mask | Collect all acorns in World 7 boss
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| Faucet | Collect all acorns in World 3 stage 1
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| Feelers | Clear World 8 stage 1 in Mirror Mode
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| Fish Costume | Beat the World 3 boss
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| Flowers | Clear World 2 boss in Mirror Mode
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| Glasses | Collect all acorns in World 1 boss
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| Green Ribbon | Clear World 4 stage 2 in Mirror Mode
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| Green Sunglasses | Collect all acorns in World 3 boss
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| Headphones | Collect all acorns in World 3 stage 2
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| Helmet | Beat the World 7 boss
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| Hibiscus | Collect all acorns in World 4 stage 1
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| Ice Cream Cone | Collect all acorns in World 6 stage 1
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| Laced Hair Band | Collect all acorns in World 6 stage 2
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| Mask | Collect all acorns in World 5 boss
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| Medium Pot | Clear World 2 stage 1 in Mirror Mode
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| Mohawk | Collect all acorns in World 2 stage 1
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| Mushroom | Collect all acorns in World 1 stage 2
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| Native Headdress | Collect all acorns in World 2 boss
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| Orange Ribbon | Clear World 1 stage 2 in Mirror Mode
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| Palm Tree | Collect all acorns in World 4 stage 2
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| Party Hat | Collect all acorns in World 6 boss
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| Plug | Collect all acorns in World 8 stage 1
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| Plunger | Clear World 3 stage 1 in Mirror Mode
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| Ponytail | Collect all acorns in World 1 stage 1
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| Rafflesia | Collect all acorns in World 2 stage 2
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| Red and White Hat | Clear World 7 stage 1 in Mirror Mode
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| Red Ribbon | Clear World 5 stage 2 in Mirror Mode
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| Santa's Hat | Collect all acorns in World 5 stage 1
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| Seed Leaf | Beat the World 1 boss
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| Silk Hat | Beat the World 5 boss
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| Skull | Beat the World 2 boss
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| Soft-Serve Ice Cream | Clear World 6 stage 1 in Mirror Mode
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| Stars | Clear World 8 stage 2 in Mirror Mode
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| Three-Scoops | Clear World 6 stage 2 in Mirror Mode
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| Tiara | Collect all acorns in World 7 stage 2
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| Toilet Paper | Clear World 1 stage 1 in Mirror Mode
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| Umbrella | Clear World 5 stage 1 in Mirror Mode
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| Watering Can | Clear World 3 boss in Mirror Mode
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| Witch's Hat | Collect all acorns in World 5 stage 2
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