Unlimited health and Necroplasm: Press Start to pause game play, then quickly press Up, Down, Left, Right(2), Left, Down, Up. Spawn will speak to confirm correct code entry. All weapons: Press Start to pause game play, then quickly press Up, Down, Left, Right, Left, Right, Left(2). Spawn will speak to confirm correct code entry. Unlimited ammunition: Press Start to pause game play, then quickly press Up, Down, Left, Right, Up, Left, Down, Right. Spawn will speak to confirm correct code entry. Level select: Press Start to pause game play, then quickly press Up, Down, Left, Right, Left(2), Right(2). Spawn will speak to confirm correct code entry. Unlimited Necroplasm: Press Start to pause game play, then quickly press Up, Down, Left, Right, Down, Left, Up, Right. Spawn will speak to confirm correct code entry. No blood: Press Start to pause game play, then quickly press Up, Down, Left, Right, Up(4). Spawn will speak to confirm correct code entry. Unlock all comics: Press Start to pause game play, then quickly press Up, Down, Left, Right, Right, Left(2), Up. Spawn will speak to confirm correct code entry. Unlock encyclopedia: Press Start to pause game play, then quickly press Up, Down, Left, Right, Left, Right, Up, Down. Spawn will speak to confirm correct code entry.