Steam achievements:
ACHIEVEMENT – HOW TO UNLOCK
Boom! Headshot! – Shoot 10 zombies offmap with Sniper items.
Buspocalypse – Complete Act 1.
Con-GRAVE-ulations – Complete all 10 blocks in Graveyard Survival.
Endangered Species – Complete Act 2.
Epic Oops! – Kill 1,000 Survivors.
First Timer – Kill the first zombie in the Campaign.
For the Greater Good – Kill 500 Survivors.
Friendly Fire – Kill 100 Survivors.
George Metesky – Kill 5 non-Zombies with a single grenade.
Grand Theft Auto – Open 20 vehicles.
Grande Surround – Surround 15 zombies at once.
Late Title Card – Witness the glory of aggressive fonts!.
Movie Lover – Watch America’s Fighting Dinosaur at the drive-in.
Occupy Town Hall – Complete all 20 blocks in Town Hall Survival.
Oh, the Humanity! – Kill 8 or more survivors with a single air strike.
Oops! – Kill 10 Survivors.
Paleozombology – Complete Act 3 by defeating the boss without the forklift.
Vaccination into Mutation – Apply the zombie cure to one patient. Congratulations. You created super zombies.
Venti Surround – Surround 20 zombies at once.
Winnar! – Complete the campaign.
Zombie Assassin – Kill 500 Zombies.
Zombie Butcher – Kill 100 Zombies.
Zombie Massacre-er – Kill 5,000 Zombies.
Zombie Murderer – Kill 1,000 Zombies.
Zombie Tickler – Kill 10,000 Zombies.
in PC Cheats