Press A, A, C, A, B. This code must be executed in a two player game. When activated, the words "Blood Feud" appears on the screen, no additional drones are launched after the initial three for the preview, and the boss is never launched. The last player alive wins the match and gets the points for the "Boss Kill" for a normal level. Each round lasts forty-five seconds. If time runs out, both players lose a life. A new round begins each time a player is killed until one of the players has no lives left.