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