Perhaps the best thing about multiplayer, however, is that the game will, for the first time in the series' history, feature an entirely cooperative campaign. Players will now be able to fight their way through Purgatory with a friend by their side. (Although if it's anything like our Left 4 Dead matches around the office, most of the time your friends are going to be shooting you in the face and laughing as you writhe in the grip of some unholy creature's freakishly long tongue.)

The game is being built on an improved version of the Painkiller engine, augmented with new features like motion blur and dynamic lighting. You can see from the screens that the game shares the Painkiller style, and the art design is being handled by the famous Austrian artist Peter Siedl.