Blood of the Dead hitting 100

Zombie to easy. Strategy I used was sitting in the Citadel leaving the door connecting the Citadel and the Laundry Room closed. I used the death machine as my special weapon and the RPG as my main. I used the wonder weapon upgraded as the Lavaguat to un-alive Brutus. Perks I used was PHD slider, Bandolier Bandit, Dying Wish, and Stone Cold Stronghold as my toxin.