Next-generation graphics - The game uses the proprietary 3D PAIN Engine capable of pumping out an unbelievably high polygon count, while adding increased texture quality and the latest lighting and shadowing techniques.
Combo weapons - All weapons come in pairs, with a primary and secondary fire.
Morphing - Your unholy pact gives you the power to morph into a powerful possessed creature with every 66 souls collected.
Lasting replay value - Painkiller features a standard single player campaign, with additional modes to encourage replay. The game also features full multiplayer support.