The first is a co-operative mode in which two players, or one player and up to three computer-controlled players, can tackle the missions together.[2] If two humans play, the game uses a split screen display, with the option to split horizontally or vertically. Only one human player is required to survive the mission, but all the objectives must be completed. Additionally, the game features a "Counter Operative" mode in which one player plays the missions as Joanna while another takes over the role of an enemy and attempts to stop her.[15] If this human-controlled guard is killed, the game continues with the Counter Operative player taking control of a different enemy in the level.[15] The game does not tell the player controlling Joanna which enemy the Counter Operative player is controlling.[15]