Covert Strike Force Mod for Half-Life Videos & Audio

From the maker of Thai's Contra - Force Mod. The Covert Strike Force (CSF) is a Half-Life Modification based on the Realistic Cooperative. You and your teammates will have to act together strategically to fight the enemy monsters. Features that CSF will contain are: Buying System, Cash system, bayonets, Controlable Helicopter and much much more...