Demons of the Badlands is a Red Faction: Guerrilla DLC pack. It was released on August 13, 2009 for Xbox 360 and Playstation 3 at $9.99 USD (or 800 Microsoft Points). The DLC is included stock with the PC version of the game.
|“ Break free and experience the all new single player game in this prequel chapter of the Red Faction universe. Mariner Valley, the once peaceful home of the Marauder people, has been torched and defiled by the EDF. The Marauders demand vengeance and Samanya leads the revolt. Set several years before the arrival of Alec Mason on Mars, take control of Samanya to explore the Mariner Valley outside of Tharsis. Exact your revenge with 7 all new weapons including the Spiker machine gun and Marauder Missilepod, and 3 new vehicles including the Punisher walker. Perfect your guerrilla tactics with 11 new actions including raids and demolitions. Show off your skills with 10 new unlockable achievements. Take control and lead the Marauder revolution. „
|— XBOX Marketplace