Originally Posted by JuSt BLaZe
I'd recommend -WITHOUT CASES-
. I managed to do 74.000 Kills
as you can see on my picture in this thread. But some also managed to do it during the cases, guess of the more numerous Gas Zombies
. Anywayz, let me know which method was better for you.
I'm in the middle of getting Head Trauma and the Cross Dresser achievement so after I get both of them I will work on doing the zombie achievement but if I get bored then I'll attempt it. I'm home from work today so I may just pull an all day thing.