Campaign

Description
Campaign is a gamemode in Left 4 Survival that was added in 5.7.8 and is a counterpart to Rescue. It is available to Death Canyon and Sodden Swamp. This gamemode is prove to be difficult for survivors along with Arena, due to some of Infecteds are somewhat that overpowered.

Mechanics
Campaign’s mechanics is very different to Rescue’s. The survivors must find the fuels and fill the generator until the fuel count is full and wait for 2 minutes for rescue vehicle to arrive and get to it before 45 second timer is out which the rescue vehicle will depart. If the timer hits 0, all survivors have been killed or they are not on the rescue vehicle after it departs, the zombies win. The fuel count depends by 3 depending how many players spawn as survivors.

Survivors

 * If you are a newbie, this gamemode is very challenging for you. Always work together and always kill Hunters first as they can end the round quickly.
 * If you don’t kill Hunters first, you will not be able to win.
 * Avoid camping and hiding for too long, as they can waste your time.
 * If the zombies are camping on a generator, don’t attempt to throw a Pipebomb, as it can be a item wastage as you need to throw it when the zombies are camping the rescue vehicle.
 * When using a fuel on a generator, you cannot use weapons, leaving you vulnerable to any zombies. Pay attention if none of the teammates are helping you.
 * When you are fuelling a generator:
 * Hunters and Tanglers can pin you easily, always kill them first.
 * Chillers can freeze you easily, although the fuel count still goes up as long as you too close to it.
 * Spitters can damage you easily with their acid, Infernos can easily burn you and Bloaters can easily obscure your vision.

Zombies

 * If you are a Riot and a survivor is fuelling a generator in Sodden Swamp, charge towards the generator and push the survivors into the water, damaging them easily.
 * This can be countered by side step out of the way, if you not quick enough.
 * Hunter can be your best friend as they can end the round quickly as long as the survivors don’t have a defender or any strong weapons or kill you first.
 * Camping in a generator is quite a bad idea, as survivors use Rocket Launcher which kills you and your zombies quickly.
 * If the rescue vehicle appears, do not camp to it, as survivors will throw a Pipebomb, kicking you and your zombies out of the rescue vehicle.

Trivia

 * It, along with Arena are the most difficult Gamemodes you can win as a survivor.
 * Campaign was improved in recent update, as the icon to fuel a generator is not a message anymore.
 * There is a glitch that is patched where multiple fuels spawn on the same location.
 * Before Swamp was revamped, Death Canyon is the only map that had this gamemode.