Complete the indicated task to unlock the achievement.

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