State of Decay: Year-One

To unlock this achievement you simply need to kill one of each of the five freak zombie types. Freak zombies can be encountered randomly and appear as larger blips on your hud map in the bottom left corner of your screen. You can also locate them by climbing any high structures to survey the surround area or may very well be given a mission to specifically kill one of them. Here is a list of the freak zombie types in least to most dangerous order and how to kill them:

1) Screamer Zombie - These armless zombies scream to alert nearby zombies. If you get too close their screams will also prevent you from fighting or running away. They can be easily dispatched with a firearm from a distance.

2) Swat Zombie - These zombies are dressed in riot gear and can not be killed with bullets. These you will have to fight hand to hand, but are not that more dangerous then regular zombies when alone.

3) Bloater Zombie - These zombies are more rare then others and are filled with putrid gasses. Killing them will unleash a gas cloud that will cause you to lose heath and stamina where they died. If you run one over with your vehicle it will become a coffin if you stay inside it as all the Bloaters guts will have coated the vehicle. The gasses will eventually dissipate and these zombie type are best killed with a firearm from a distance.

4) Juggernaut Zombie - These zombies are huge (they remind me of the wrestler King Kong Bundy) and dangerous for a few reasons. Even for their size they can charge at you fairly quickly. They will severely damage your vehicle if you try to use it to kill them. It will take a lot of damage to bring one of these zombies down. While you are working on him other zombies will be attracted to the fight and you might get attacked from behind while focusing on the Juggernaut. The best method of dispatching these zombie types is from a distance with whatever weapons you have. Just be very mindful of your surroundings and that you don't get ambushed from a horde.

5) Feral Zombie - These zombies are very dangerous and will kill you very quickly, sometimes taking you out by complete surprise. Their skin is a yellowish hue, they move on all fours, and have an amazing leaping ability. Because they are incredibly nimble, it is very difficult to run them over with your vehicle. When fighting these it is best to have help from another survivor to distract them so you can take them out with firearms or hand to hand. If you are alone it can be a tough fight.