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