Left 4 Dead/Weapons

The weapon selection in Left 4 Dead changes as you progress through each campaign (aka "movie").

Each survivor starts the game with a Springfield Armory M1911 pistol. An important thing to remember with the pistols is that they have infinite ammo; this makes the pistol a great weapon to turn to when you are low on ammo for your main guns. Later on in the level, the Director will typically place a second pistol (it appears as one pistol but all members of the party can pick one up), allowing you to dual wield. This effectively doubles your damage and rate of fire. Dual pistols are accurate enough to pull off headshots at a moderate distance (especially when crouching) and are very useful for drawing the attention of non-swarming Horde Infected to pick off while conserving your ammo for the swarms and special Infected. The pistols' small spray zone means you are less likely to hit another survivor when fighting at close quarters.

In the beginning of each Campaign you are given the choice of an Uzi submachine gun (50 shots per clip) or a Remington 870 pump-action shotgun (8 shots per clip) as your primary weapon. As the players progress through each Campaign Chapter, new weapons can be found at certain points chosen by the Director or will spawn in the safety rooms at the beginning of a chapter.

The tier 2 weapons are as following:
 * The M16A3 assault rifle
 * Benelli M4 Super 90 shotgun (10 shots per clip)
 * Ruger Mini-14 rifle (12 shots per clip)

From time to time the Director will spawn a pile of ammo in one of several predetermined locations. Using the ammo pile will automatically refill the ammo of whatever gun you are using. The ammo pile is infinite, so when you are near one you don't have to worry about conserving your ammunition.

Throughout a level you may also find Pipebombs and Molotov Cocktails. The Pipebombs are best used to distract incoming horde rushes or lure out Infected in hiding, as all zombies are attracted to the bright flashing light and beeping sound that the Pipebomb emits before it explodes. Molotov cocktails do not attract zombies, but are great for creating areas of intense fire to burn incoming zombies in a large area, as well as for quickly killing Boss Infected such as the Tank.

In specific places, the Director will spawn either a Kerosene tank (which has the same effect as a molotov cocktail after being shot) or a Gasoline tank, which explodes (which has the same effect as a pipe bomb minus the attraction of the horde). These two object can be picked up and carried around. When picked up, the player can not use any other weapon until the tank is dropped. The player may also melee with these tanks and eventually throw them out against unsuspecting zombies.

Finally, in certain places (usually campaign finales) you will find stationary turrets. These are never placed randomly, and their high rate of fire and stopping power are great for driving back hordes of zombies or dealing massive damage to Tanks.