Painkiller: Battle Out Of Hell offers numerous features to intensify enjoyment of this critically acclaimed shooter. The Expansion Pack includes 10 massive single player levels in an additional single-player chapter, as well as new multiplayer modes, maps and models. It will also offer an amplified arsenal of un-deadly weapons, bigger and badder bosses and the map editor Software Development Kit. An unadulterated shooting spree, Painkiller boasts truly inspired graphics and some of the most menacing level bosses ever seen. Utilizing the impressive Havok 2.0 physics engine, this game continues to achieve new heights of physics-based gameplay while the proprietary 3D "PAIN engine" pumps out an unbelievably high polygon count, incredible texture quality and the latest lighting and shadowing techniques.