| Achievement | How to unlock
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|---|
| A Startling Discovery | Find a Collectible.
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| Autumn Postmasters | Earn Postmaster on all Autumn levels.
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| Fully Stocked | Earn all of the wearables in the Wardrobe.
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| Fun in the Bungalow Basin Sun | Complete every level in Summer.
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| Kiwinter Kiwonderland | Complete every level in Winter.
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| Learn the Ropes | Complete the first week of Summer.
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| Postmasters General | Earn Postmaster on every level in the Calendar.
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| Practice Makes Postmasters | Beat your previous score on a level.
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| Pumpkins and Postage Stamps | Complete every level in Autumn.
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| Secrets of the Telepost | Find every Collectible.
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| Stocking Up | Earn half of the wearables in the Wardrobe.
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| Summer Postmasters | Earn Postmaster on all Summer Levels.
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| Winter Postmasters | Earn Postmaster on all Winter levels.
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| Working Overtime | Earn Postmaster on every Overtime Shift.
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| Working for the Kiweekend | Complete an Overtime Shift for Bonus Pay.
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| You're Hired! | Become registered Teleposters.
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