| Up, Down, Left, Right, Right, Left, Down, Up | Infinite Necroplasm and Health |
| Up, Down, Left, Right, Left, Right, Left, Left | Every Weapon |
| Up, Down, Left, Right, Up, Left, Down, Right | Infinite Ammo |
| Up, Down, Left, Right, Down, Left, Up, Right | Infinite Necroplasm |
| Up, Down, Left, Right, Left, Left, Right, Right | Level Select |
| Up, Down, Left, Right, Right, Left, Left, Up | Every Comic |
| Up, Down, Left, Right, Left, Right, Up, Down | Get the Encyclopedia |
| Up, Down, Left, Right, Up, Up, Up, Up | No Blood |
Thanks to Revolution readers Cromlech, Lich_King, and Joey Pantoale!