Press Up, Up, Down, Down, Left, Right, Left, Right at the main menu or during game play. A sound will confirm correct code entry.

Press Up, Down, Left, Right,, Up, Down, Left, Right at the main menu or during game play. A sound will confirm correct code entry. The "Relive Episode" option will now be unlocked, allowing you to select any level including those that have not been played yet

Enter "ZZZCZZCCZ" when you are on the pause menu screen.

Successfully complete the game. This option allows any level to be replayed.

Make you way to the door where the guard tells you he will not let you in because you are not a familiar face. Turn around. Go off the stage. Climb up the steps on your left. Then, go up the stairs on that side. Move up the stairs until reaching the top. On the right side down the hallway is a case on the wall. Inside the case is an ax. Use the ax on a person or body. Executions immediately detach a head, where as hacking at a corpse requires a few swings. Pick up the head. Run back to the door and equip the head as a weapon. Go to the door and press Action. The guard will let you in.