Here is the full list of all 25 Containment: The Zombie Puzzler achievements.
Open 20 vehicles.
Kill 5,000 Zombies
Complete all 20 blocks in Town Hall Survival
Kill 1,000 Survivors
Complete the campaign
Complete Act 3 by defeating the boss without the forklift.
Shoot 10 zombies offmap with Sniper items.
Complete all 10 blocks in Graveyard Survival.
Kill 500 Survivors
Complete Act 2
Watch America's Fighting Dinosaur at the drive-in.
Surround 20 zombies at once.
Kill 1,000 Zombies
Surround 15 zombies at once.
Kill 5 non-Zombies with a single grenade.
Kill 500 Zombies
Kill 100 Survivors
Complete Act 1
Kill 10 Survivors
Kill 8 or more survivors with a single air strike.
Apply the zombie cure to one patient. Congratulations. You created super zombies.
Kill 100 Zombies
Witness the glory of aggressive fonts!
Kill the first zombie in the Campaign.
Kill 10,000 Zombies