Tactics Playing As Infected

In a standard 4v4 versus game each team will take turns playing as the boss infected (Boomer,Hunter,Smoker or Tank)and the survivors (Bill,Zoey,Louis and Bill There is already a Tactics page for survivors but this is for the Infected players.

Ill start off with tatics for each individual boss infected.

Boomer
As a boomer your job is to attract the horde and slow the survivors down the more you cover with your "Vomit" the better. As the boomer you want to hide and ambush survivors as all there attacks have a very limited range. The boomer acts more like a support type as they dont dish out much damage on there own due to this they are a perfect first hit in an ambush as there main attacks attract the horde causing survivor teams to panic while the other special infected move into deal the real damage. A good survivor can tell where a boomer is from the gurgling sounds that it makes. Remeber you are very weak and will explode in 2-3 shots minimum if you try to rush at them in the open they will just turn and shoot you at a safe distance. Another effect of the boomer is that when it explodes it also causes any survivors around you when you died be covered with your "Boomer Bile" while knocking them back for a few seconds. This explosion is a good way to cover survivors with bile if you missed them with your vomit because inexperianced players will shoot you on sight instead of Bashing you back and shooting you there. Use the roofs to your advantage! You can vomit on unsuspecting Survivors below by vomiting from a roof quite high up then jump down to let them shoot you in blind panic!.Vomiting on a person who is already covered in bile doesnt do anything so a good idea is wait around a corner from the person you just vomited on and wait for another survivor to come to his aid then vomit on him as this will cause a new horde to attack the newly arrived survivor adding to the panic. Good boomer players use the knock back effect of the explosion very effectively by using it either to knock survivors off high edges to a high fall normally doing large amounts of damage and if high enough will cause instant kills.Also another use is to knock down doors instantly opening the once safe area for the other infected. As a boomer dont be afraid to start clawing at survivors if escape from them looks unlikely as this will cause extra damage and if you have just vomited on part of the group will add to the confusion.

Hunter
As a hunter your job is to kill people basicly. The hunters pounce attack leave survivors pinned and they will take periodic damage untill another survivor saves them. Act as a hunter would in real life, Stalk your prey, Stay hidden, Pounce on any that stray from the group. Scare the survivors by wall jumping and generally just jumping. When you get ready to pounce by crouching the hunter growls which is a give a way to survivors who know what to listen for, Also when you do pounce the hunter lets out a loud and distinctive scream as soon as survivors hear this they will generally look to any roof tops and be in defence mode.See my guide on How To Wall Jump

Smoker
As a smoker your job is to ensnare a survior and pull them away from the group. Your "Tongue" attack leaves survivors helpless after about 2 seconds of being ensnared, A survivor with quick reactions can break himself out of your "Tongue" most of the time. But a well placed smoker in the midst of a horde attack can spell disaster for the Survivors if not dealt with properly. Always look to be either up high or in a dark place the darker/higher the less chance the survivors will be able to shoot at you. A good survivor can recognize the Wheezing and Coughing of a smoker and will be on the alert to his team mates being snared. If you want to be really annoying stand by an "Alarmed Car" Like the one in the No Mercy apartments chapter by the Stairs if you stand on/by the car and pull a survivor over to you the other survivors will have no other choice but to try and save the person you pulled and if bullet goes stray and sets the alarm off attracting the horde buying your more time to attack while the horde joins in carnage. The witch/smoker tactic is devestaing as the smoker stands in close proximity to a witch and pulls someone in causing the witch to attack. Good smoker players excel at using the enviroment against the survivors this can be by dragging them down from a higher part of a level as the fall will do alot of damage and if the lower area is just where the survivors have had to climb up from mean that they will have to reclimb back up to the higher area leaving them away from the group and will slow down the group while they wait for the suvivor to catch up.Smokers can also drag survivors through fire that again causes large amounts of damage while either forcing another survivor to run through the fire to release there tied up team mate or wait until the fire dies down while the smoker does damage to the tied up survivor.

Tank
The Tank, The most dangerous Boss Infected by far able to withstand lots of punishment and incap survivors in a few punches, The tank is given out at random but usually goes to the 2 players with the highest score. When you get the tank you will usually spawn a way in front of the survivors, Start running towards them as soon as you spawn for two reasons, A Because the Tank Music will play and survivors will prepare for a tank and B Because of the "Control" Effect, If you cant see the survivors the tank will get angry and the control meter will go down, When the control meter is empty you lose your turn with the tank and control moves to another player so you must always be on the move/attack! As a tank you need to use the enviroment to your advantage! Punch a car at a survivor its an auto incap! On Finale's you will usually get 2-3 tank spawns, On No Mercy try and punch survivors off of the roof for an instant and free kill. Always look for a lone survivor as a tank! If the others run off but one is trying to heal or gets trapped by infected score an easy incap on them! They wont be able to get far but if your running at all the survivors and there all unloading clips into your face your speed will be dramaticly reduced and they will just run and shoot and usually kill you before you do any real damage. Also note if the survivors set you on fire you will eventually die no matter how much they shoot you or how many you kill you will die after being set on fire by a molotov/gas can.So dodge them at all costs. Dont punch any survivors already pinned by a hunter or constricted by a smoker because that kills the hunter and its a waste of there life.Tanks can also punch down Safe room doors(In campaign anyways)

Co-Ordinate Your Attacks!
This is by far the most important factor in a left 4 dead versus match. If a hunter pounces on his own he will just get killed before he can do any real damage. If a smoker trys to constrict a survivor they will just get freed without any real effort giving the survivors about 20 seconds while you respawn and get into position to try again. The best tactic for Co-Ordinating your attacks is let the boomer vomit on as many people as he can then the hunters pounce from there hiding spots and the smoker pulls someone away. If the boomer vomits on 1 Person (Fail) Then Pounce/Constrict the other 3 who havent got Boomer Bile on them! The 1 person will be getting attacked by infected and when you have boomer bile on you you cant see that other survivors have a hunter on them or Smoker Constricting them! Also co-ordinate your attacks with the tank, Wait for the tank to spawn and let him cause havoc then pounce/constirct on any survivors you see lagging behind or running off to fast. If your a boomer on a tank spawn throw up on some people and its pretty much game over, Tanks are hard on there own but with a horde of infected slowing you down you aint got much chance of escaping.

Get to know all the maps!The places you can climb to, good ambush spots etc