The Special Infected have higher intelligence than the Common Infected.
The final two Special Infected ( the Tank and the Witch) are considered to be 'Boss Infected', as they have a very high amount of health, they spawn infrequently (sometimes at fixed points), and they can easily kill a Survivor in a matter of seconds. The other two Special Infected ( the Boomer and the Spitter) act as support for the pinning Infected, as their attacks can help slow down the Survivors enough for a pinning Infected to attack them.
They don't spawn as regularly as the Common Infected, but their abilities can easily wipe out a team of Survivors if not dealt with quickly, making them the true teamwork testers of the Left 4 Dead games.įour of these Special Infected (the Hunter, Smoker, Charger, and Jockey.) are 'pinners', as when they attack you, they 'pin' you, requiring another Survivor to knock them off or kill them to save the trapped Survivor. Through some unknown mechanism of the Green Flu, a small percentage of Infected humans will undergo a dramatic mutation, eventually turning into one of these Special Infected, each with their own unique inhuman abilities. The Special Infected are the mutated variants of Infected.
