Zombie Apocalypse
12 Achievements
5-7h
Gun Shop
Kill at least one zombie with each weapon type in any game mode
40.4%
How to unlock the Gun Shop achievement in Zombie Apocalypse - Definitive Guide
The last one you will get will be the chain gun on level 28.
There are 11 different types of weapons. The Machine Gun, Hunting Rifle, Flamethrower, Minigun, Dual Uzis, Molotov Cocktail, Shotgun, Chainsaw, Grenade Launcher, Rocket launcher, and Zombie Bait. All of the guns will spawn some time within your gameplay. You start out with the machine gun and that is your primary weapon, so you will ofcourse get kills with that. Guns spawn by a blue circle on the ground, the gun will be inside the circle. Run over it to pick up that weapon. You will be able to use that weapon till the ammo runs out. You just need to get one kill with each weapon, so you will most likely get this throughout your gameplay. By day 29, you should get it.