Left 4 Dead

Immune: self explanatory. a survivor that won the genetic lottery and is immune to this frequently mutating virus. can't gr infected by the airborne version of the Green Flu or by getting bitten.

carriers: infected but asymptomatic survivors, can get non immune survivors infected by simply being near them for a prolonged period of time.

highly infectious, highly mutative, unpredictable, incurable, frequently mutates from airborne to direct contact infection to airborne again. only a handful of people are immune, most are asymptomatic and can unintentionally pass the infection to non-immune individuals.

Normal Infected: Huge numbers, fragile, can be found everywhere, attracted to loud sounds.

Uncommon Infected

Hazmats: used to be researchers. fireproof because of Hazmat suits. may drop a bile jar. just as fragile as commons. can be found in cities and fallen quarantine zones.

Fallen Survivor: used to be a doomsday prepper. there's at least 1 in 100 hordes. runs away once spotted or shot at. may drop med kits, unlit Molotov coctails, Adrenaline/painkillers uppon death. can be encounted almost anywhere. surprisingly tanky, but headshots is a insta kill still.

Clowns: Used to be a clown. will run around making honking noises to attract other infected individuals before joining the attack. can be found in carnival areas.

mud men: chases in all fours or crouched. can sling mud to obscure survivor's vision. covered in head to toe in mud. often found in mudlands, swamps, and sewers.

Construction Workers: used to be construction workers. not attracted by loud noises due to wearing earmuffs/noise blocking headgear. will still attack on sight. easy to spot in the dark due to reflective vests.

infected Soldiers/Riot Control Personnel: bulletproof from the front side, vulnerable backside. resits headshots. often found near fallen communities/CEDA research sites/quarantine zones. especially common in New Orleans for some reason.

(idle/common resting behavior amongst non agro infected: could be wandering around, resting, roughhousing with other infected individuals)

Smoker: Passive - Emits a noxious gas that can act as a smokescreen while alive, covers a wide area uppon death. special - has a long regenerative tongue it can shoot out to snare/strangle/pull survivors with. 250 HP. often coughs loudly. tall but slender. mostly males.

Boomer: Passive - Explodes uppon and releases zombie attracting bile uppon death. special - vomits bile at survivors to obscure vision and attract more zombies. 50 HP. fat as fuck. often makes gurgling noises. male and female variants.

Hunter: Passive - completely silent when crawling/crouched. can pin survivors by landing on them from elevated areas. has sharp claws for climbing and ripping flesh. special - can leap to high altitudes or spear straight into survivors into a pin to rip them apart. roars loudly in the process. 250 HP. stealthy mother fucker. mostly males.

Spitter: passive - leaves a trail of acid from mouth. special - spit sizzling acid that spreads on the ground but evaporates after 10 seconds. 100 HP. ugly as fuck. makes weird creaking/chittering sounds. mostly females.

Jockey: Passive - small and hunched. special - rides survivor's shoulders/backs then obscures their vision with it's hands and claws at their face while using it's weight to make survivors stumble and lean towards undesired locations (hordes). 325 HP. freaky as fuck, laughs like a hyena. mostly males.

Charger: Passive - big, bulky and tanky. special - uses it's one GIANT arm as a battering ram to charge at survivors sending them flying and the pick up the nearest survivor and pummel them on the ground. 600 HP. loud and makes boar/hog like noises/squeals/roars.

idle: none, they all actively hunt for survivors.

Witch: Passive - Only triggered to attack if; Startled, shot at, bumped into, flashed with a flashlight, screamed at. will only target the person that did any of these things to it until they are dead. special - long sharp claws that can easily decapitate or down a survivor. behavior - could be wandering around or sitting in one spot. often occupies narrow paths and areas with sugar (candy stores/sugar farms/mills). cries loudly. 1,000 HP. very tanky despite looking frail. mostly females. very rare to encounter. advice: avoid as much as you can and keep your distance. startle range: 5 to 10 feet.

TANK: passive - huge gorilla like body, head sunken in-between muscles, bullet sponge. special - strong enough to rip and hurl large chunks of debris. 4,000 HP. Huge body, small legs. ground WILL shake once it's on the move. advice: run and shoot.

Thrown: Bile Jar/puke-in-a-bottle - will attract zombies at where it lands (does not attract zombies while contained in it's jar), non lethal but can be used to make common zombies attack boss special infected. Pipe bomb - DIY explosive. makes a beeping noise that attracts zombies before exploding.

Consumables: CEDA approved Adrenaline shots. CEDA approved Med kits. CEDA approved portable defibrillator.