Left 100,004 Dead (30G)
Killed 100,004 zombies.

How To
In order to get this achievement efficiently, you should:
- Be level 50 and having maxed the Mechanic ability to unlock the ''Indestructible Vehicles'' perk.
- The best vehicles is the RollerHawg because of it's speed and deadly fire attachments.

The Method: Basically, you want to go to ''select chapter'' and load the chapter 3 (You will have enough time) and you want to head to district called '' Ingleton'' (Upper-left corner). There, grab your vehicle at the garage and then you want to follow the road on the picture below. Just stick to this road and you'll encounter plenty of zombies and little to no obstacles on your way. (It should take you about 2 hours to get to 100,004 kills)