Hard Rain

Hard Rain is the fifth (fourth if you do not have The Passing DLC) campaign in Left 4 Dead 2, taking place after Swamp Fever. It is set in the riverside town of Ducatel, Mississippi (referred to as Milltown in the chapter title) as a hurricane approaches. At the start of the campaign, Virgil drops off the Survivors with a mission to find and bring back diesel fuel for his boat. The mission is to travel to the Ducatel Diesel gas station through the abandoned town of Ducatel, the Witch-infested ruins of the Ducatel Sugar mill and a cane field populated with Infected. Once they have the diesel, a hurricane arrives and the area immediately floods, obliging the Survivors to retrace their steps through knee-deep water that impedes their progress and squalls of wind and rain that reduce visibility and make hearing difficult. When they finally reach Ducatel, they signal Virgil to return and pick them up by switching on a nearby Burger Tank roof sign, thereby triggering the campaign's finale.

This campaign features the Worker Infected who are denoted by yellow safety helmets and reflective vests. They can take more damage than Common Infected and are not attracted to Pipe bombs because they wear ear protection that prevents them from hearing this grenade's distinctive sound.

Achievements

 * See Main Article: Achievements

Behind the Scenes

 * Initially, the Survivors had to travel some distance into the initial chapter to get weapons. During play testing, it was found that players were hesitant to do this, thus failing to get to upgraded weapons in time. This problem was overcome by putting weapons and supplies in the nearby Burger Tank.
 * According to Chet Faliszek at EuroGamer Expo London, early builds of the campaign had the players turn on the lights of houses and other areas on the way to the gas station so that they would be lit on the way back, but players found this to be a menial task, and so the idea was scrapped. The lights turn on automatically now.
 * At first, the Survivors were going to use flares to signal Virgil (and start the finale) and he would sail back to pick them up. The idea of firing off a flare gun was later dropped in the final version and its sole legacy is a brief and occasional exchange between the Survivors at the start of Hard Rain campaign when Nick is accused of leaving a "gun bag" containing the flare pistol behind on Virgil's boat.