Part 1: The no mercy campaign beings with a helicopter flying past instructing you and the other survivors to proceed to mercy hospital for a rescue. You then set off through the house to the streets below and eventually end up in a saferoom near the subway.

 

Part 2: You and the others set off through the subway working your way past hordes of zombies, boomers, smokers, hunters and the possibility of a witch or tank to come outside where even more zombies await your arrival. This will once again lead you onto the streets trying to pass mass amounts of zombies to the next safe room at the end of the road.

 

Part 3: You set off looking for a route to mercy hospital and (after probably fighting a tank and/or maybe a witch) end up in a sewer fighting... yep you guessed it, more zombies! Once you finally get out of the sewer the hospital awaits infront of you but not the end of the campaign.

 

Part 4: As you walk out you find yourself in the hospital and conviently heading towards an elevator even if you do not realise it. You may face a tank and a few infected bosses until eventually you arrive at this lift. This lift will take you to the 28th floor however some inconsiderate person left it up at that floor so first it has to come down in which time you have to fight off hordes of zombies because somehow they know you pressed the button. Once at the top there is an open roof part where you could potentially end up falling and dying if your a complete and total brainless moron as you have to hang for a while before you fall. The next safe room is just around a few corners but there may be a few surprises along the way.

 

Part 5: The finale. Hah. Yes. The finale. A long corridor. A ventilation shaft. A radio. A whole lot of zombies. A tale with a twist... No rules, you, your team mates, them and guns to seperate you both. Best of luck.