Infected
1 - 3 New Special Infected
The Charger - Designed for speaking up camping survivors. Knocks down survivors and is capable of picking up a survivor and smashing him/her into the ground which only another survivor can free him/her from. The Charger is much tougher than the other Special Infected (besides the Witch and Tank) but is especially weak from behind.
The Spitter - Designed to spit at survivors with acid and poison. The damage inflicted will deal damage over a period of time. Spitters are able to launch acid and poison from a fair distance.
The Jokey - A kind of crazed infected that has to ability to control survivors into dangerous situations.
2- 'Assigned' Common infected ill be assinged to a certain campaign. For example, in the Campaign 'The Parish' some of the common infected wear hazmat suits and can’t are thus protected from fire. The Hazmat Infected are only exclusive to the Parish campaign. However, it is said that other campaigns have each of their own assigned common infected that have other special abilities.
3 - Tank, Hunter, Boomer, Smoker still exist and they now have a new skin texture.
4 - More gore this time around for the infected. You can now literally tear them apart limb by limb, more blood and gore shown. For example you can even see torn backs/heads with wounds. Common infected are a bit tougher and can now survive dismemberment to a degree.
Campaigns
1 - Five New Campaigns (Three are already known as The Parish, Swamp Fever, Dark Carnival )
The Parish Campaign is a pure broad daylight campaign in the city
Swamp Fever Campaign is a scary, dirty open-ended swamp
Dark Carnival Campaign takes place in an amusement park
Dead Center Campaign takes place in a shopping mall
Hard Raid Campaign takes place in a factory
3 - All Campaigns will be ready for Versus, 4 Player Co-op, Survival and the new multiplayer game-mode called Scavenger right out of the box as you purchase it on the launch day.
4 - Custom maps will be portable to Left 4 Dead 2
5 - All 5 campaigns will be connected by a single overarching story, unlike L4D1. The first campaign will be set in Savannah, Georgia before the infection fully sets in, the survivors will make their way through a swamp at some point and the final campaign (The Parish) takes place in New Orleans.
6 - Maps will be massive with different routes available. Sometimes they will be open and other times they will be closed off.
Survivors (fail)
1 - Four New Survivors
Coach, a high-school football coach.
Rochelle, a cable television reporter from Cleveland.
Ellis, a fun-loving southern mechanic.
Nick, a con-man and gambler who is initially unsure of the other survivors.
Gameplay Modes Changes/Additions
1- Witches wander around the infected crowd during the day and sit and cry during the night.
2- New multiplayer gameplay mode that we do not know of yet.
3 - The AI Director is now smarter/harder and can change the layout of the map depending on how good or bad your doing. If you’re doing good then a specific part of the map can end up being a maze with a dead end and only one way out or if your doing bad it can be as easy as going through a straight line.
Weather events dictated by the AI Director, particularly in swamps. These will suddenly reduce visibility so you will be unable to see other survivor’s outlines.
4 - Single Player, Survival, Versus modes will ship with the game ( the “new” multiplayer gameplay mode).
5 - According to the videos some of the Left 4 Dead 2 achievements seem to be same as the original Left 4 Dead achievements.
6- A new type of crescendo events refered to as “gauntlets” which require the survivors to move to a new area to turn off the crescendo so they cannot simply hide in a corner and wait it out.
A crescendo was mentioned where you must make your way through a parking lot full of cars with alarms and must avoid setting them off.
7 - Car alarms will not last a set time. If one goes off you need to vacate the area or the infected will keep on coming.
Weapons
1 - Incendiary ammunition, a special ammunition type that, when picked up, gives you one full magazine of bullets that set whatever it hits on fire before reverting to normal ammunition.
2 - New Weapons - total 20 new items/weapons
New Pistol = Sig Sauer which can be dual-wielded with a Glock. It is unknown if there are any functional difference.
New Pump-Shotgun = A Mossberg 500 Marine. Unknown if there is any functional difference.
New Submachine Gun = A supressed MAC-10. The supressor is merely aesthetic, it is also possibly more accurate than L4D1’s SMG but this is unconfirmed.
New Autoshotgun = SPAS-12. Unknown if there is any functional difference.
New Assault Rifle = FN SCAR. Unknown if there is any functional difference.
New Hunting Rifle = Scoped H&K G3 (possibly). The hunting rifle now has 30 round magazines rather than 15.
A powerful revolver - details unknown but it will be powerful.
A “bolt action carbine”. Details unknown, probably Tier 1 Hunting Rifle.
3 - Melee Weapons will be introduced:
1 - Axe
2 - Baseball Bat (Pre-order ONLY through retailers)
3 - Katana
4 - Crowbar
5 - Chainsaw
6 - Frying Pan
The Axe can cr0wn the witch.
Melee weapons can be picked up in a similar fashion to gas cans from L4D1, if you switch to a gun or press E, you drop the melee weapon.
Melee weapons have two attacks, a main attack and a push attack like all weapons and items in L4D.
4 - Regardless of the new Incendiary Ammo, Molotov’s and Pipe bombs still exist in Left 4 Dead 2
5 - Old weapons may still make an appearance.
Rumors
1 - The original survivors (Bill, Zoey, Francis, and Louis) might be playable/useable in Left 4 Dead 2 (win)
2 - The Original Left 4 Dead Campaigns may appear in Left 4 Dead 2
3 - New grenades might appear in Left 4 Dead 2
4 - Survivors may be able to double up while reviving another downed survivor. (Valve has said that they’re experimenting with gameplay mechanics and used this as an example.)
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