Requires the base game Warhammer 40, 000: Boltgun to run. YOUR FAVORITE ULTRAMARINE IS BACK!You had a hell of a blast purging the heretics? Grab your holy chainsword, trusted bolter, and prepare for another adrenaline-pumping shootout, because your favorite Ultramarine is back! Bring Boltgun’s bloodfest to another level with its new DLC: Forges of Corruption. Dive into a brand new campaign consisting of 5 levels with varied environments inspired by the grim dark lore of Warhammer 40, 000.• Explore new environments: Venture forth the Graia Battlefields, navigate the corridors of the Manufactorum, and hunt the heretics hidden within the Daemonic Forge. Stop Chaos' corruption before it spreads its vile mark on the entire world!• Exterminate new enemies: Dodge the missiles of the vicious Black Havok Legion, prepare to face the terrible Helbrute in duels of epic proportions, and try not be gored by the Terminator and its Lighting Claw. Beware, for the scum of Chaos has grown even more formidable!• Purge with new weapons: Expand your holy arsenal with two brand new weapons. Burn hordes of foes with your Multi-Melta or blow them away with the Missile Launcher. Complete the purge and show no mercy!Death to the heretics.

Go to: http://store.steampowered.com/ and download STEAM client Click "Install Steam" (from the upper right corner) Install and start application, login with your Account name and Password (create one if you don't have). Please follow these instructions to activate a new retail purchase on Steam: Launch Steam and log into your Steam account. Click the Games Menu. Choose Activate a Product on Steam... Follow the onscreen instructions to complete the process. After successful code verification go to the "LIBRARY" tab and start downloading.