All Weapons
Up, Down, Left, Right, Left, Right, Left(2)
Everything But All Guns And Infinite Ammo
up,left,down,right,right,down,left,right
Infinite Necroplasm
Up, Down, Left, Right, Down, Left, Up, Right
Level Select
Up, Down, Left, Right, Left(2), Right(2)
Remove Blood
Up, Down, Left, Right, Up(4)
Unlimited ammo
Up, Down, Left, Right, Up, Left, Down, Right
Unlock all comics
Up, Down, Left, Right, Right, Left(2)
Unlock encyclopedia
Up, Down, Left, Right, Left, Right, Up, Down