Here is the full list of all 11 Zombie Office Politics achievements.
Drink a latte
Defeat the first boss
Follow the signs to Accounts
Recycle at least 10 items
Discover your first recipe
Purchase 10 items from vending machines
Take the shortcut to IT
Complete the game
Bring down 10 headless exploding zombies before they reach you
Teleport 20 chairs
Find Doris the Dinnerlady's gardening gloves