Unlimited health: Press Y, White, Black(2), White, Y Black(3), Y(3) at the extras screen. The sound of a scream will confirm correct code entry. Note: Falls are still harmful. Multi-player arena 1: Press Y(4), White, Black, Y(4), White, Black at the extras screen. The sound of a scream will confirm correct code entry. Multi-player arenas 1 through 2: Press Black(4), White, Y, Black(2), White, Y, White, Black at the extras screen. The sound of a scream will confirm correct code entry. Multi-player arenas 1 through 3: Press White(4), Black, Y, White(2), Y(2), White, Black at the extras screen. The sound of a scream will confirm correct code entry. Multi-player arenas 1 through 4: Press Y(2), White, Black(2), Y(5), White, Black at the extras screen. The sound of a scream will confirm correct code entry. All four multi-player arenas will be unlocked. Slayer power: Press Y(3), Black(3), Y, White, Black(2), White, Y at the extras screen. The sound of a scream will confirm correct code entry. Play as Dark Buffy in arena mode: Press Black, White, Y(2), Black(2), White, Black(2), White, Black(2), White, Black(3), White(2) at the extras screen. The sound of a scream will confirm correct code entry. Multi-player story mode: Enable the "Multi-player arenas" code. Select any arena, then exit out of it. Load a saved game and begin game play in story mode. Press Start on controller two when a major character is encountered during game play. If more than one major character is encountered in a scene, press Start to scroll through those that are controllable. Controller two can now be used to control that person. Press Back on controller two to stop controlling them. Note: You can also control Bosses.