Beat the game once to unlock a new opening sequence for the next game you begin.
More revolver ammunition
To get more ammunition for the revolver that you get in the beginning, instead of waiting for that one person you find to die from the electric chair, kill him with the sickle that is found in the cell. The gun will have a lot more ammunition.
Tool References
There are two references to a song by the band Tool called "Ticks and Leeches". Early in the game look closely at one of the walls. You will see the words "Ticks & Leeches" which references the song. This is not a coincidence, as later in the game, about where the Noosemen appear, written on the wall are the words "Suck Me Dry", which is a phrase constantly repeated in the song. Also, the phrase "I hope you choke" or "I hope you choke on this" can be found written on a wall some time before the gun fight with the guards and the man with the gun turret. This is also part of that song.
The Shining Reference
After you leave the Asylum where you do all the tasks with Doctor Killjoy, you will be in an area which has what appears to be a nine-step staircase. Walk up it and follow the wall. Sou should run into an opening that has walls made of some type of vegetation. You will hallucinate and see images of your children. As you follow them, they will run down one way. While continuing to follow them you will encounter a corpse that is sitting up against the vegetation wall, with an axe laying beside him. This is a reference to The Shining, where Jack Nicholson is chasing his son through the labyrinth and dies against one of the walls inside. Note: The Shining was also mentioned in the game's bonus material.
The Ring References
When you are in the abandoned World War II bunker, you will encounter a desk with three phones. Two of them are are green and the other is red. Pick up the red phone first and you will hear the a girl's voice say "You will die in seven days". Also, in Chapter 15 (An Eye For An Eye Makes The World Blind), as you come from a staircase with two small Slayers and one large Slayer, you will find yourself in a small room with white walls and a few dead COs on the walls. There will be a phone next to the door you need to go through. Pick it up, and one of the Inferna Girls (the small girls in the pink nightgowns) will say, "You will die, in seven days."
Defeating Creature At The Dock
Use the following trick to defeat the creature on the last level at the dock. The big creature will smash open a gate that has a control device that will lower a machine that shoots out a purple beam. Dodge the creature's attack and stand so a beam will hit you. There is a delay between beams. After being hit, you will glow. Press R1 to throw a glowing ball. Aim for the red spot on its chest. Keep throwing balls until the creature falls in the water. If you cannot throw any more balls, stand under the beam to recharge.
"The Birds" Reference
In the level, "Darkest Night, Eternal Blight (12)," In the tool shed behind Pit #1 (as seen on the map by pressing "back"), there are a few items. But if you destroy the boxes near them, you'll find a phone. Pick it up to hear a reference from Alfred Hitchcock's "The Birds": "Birds don't just attack people," the voice says.
Full health
Hold L + R + X and press Down(3), A, Up(2), Down, Up, A during game play. A message will confirm correct code entry.
Full Xombium bottle
Hold L + R + X and press Right(2), Up(2), A, Left, Right, A, Right, Up, Right, A during game play. A message will confirm correct code entry.
Reload ammunition for current gun
Hold L + R + X and press Right(2), Down, Up, Left, Right, Left(2), A during game play. A message will confirm correct code entry.
Refill ranged weapon ammunition
Hold L + R + X and press Left(2), Up, Down, Right, Left, Right(2), A during game play. A message will confirm correct code entry.
Shotgun with full ammunition
Hold L + R + X and press Left(3), Down(3) during game play. A message will confirm correct code entry.
All items and weapons except for Gonzo Gun
Hold L + R + X and press Down, Up, Down, Left, Right, Left, A, Up, Left, Down, Right, Up, Right, Down, Left, A, Down(3), A(2) during game play. A message will confirm correct code entry.
Gonzo Gun
Hold L + R + X and press Left, A(3), Right, Left, Right, Left, Up, A(3), Down, Up, Down, Up, A during game play. A message will confirm correct code entry.
Grenades
Hold L + R + X and press Right(3), Left(3) during game play. A message will confirm correct code entry.
Molotov cocktails
Hold L + R + X and press Down(3), Up(3) during game play. A message will confirm correct code entry.
Increase negative karma
Hold L + R + X and press Left(2), Down, Up, A during game play. A message will confirm correct code entry.
Overcome insanity
Hold L + R + X and press Right(3), A, Left(2), Right, Left, A during game play. A message will confirm correct code entry.
Bloody Torque
Hold L + R + X and press Up, Down, Left, Right during game play. A message will confirm correct code entry.
Clean Torque
Hold L + R + X and press Down, Up, Right, Left during game play. A message will confirm correct code entry.
Old movie mode
Hold L + R + X and press Up, A, Left, A, Down, A, Right, A during game play. A message will confirm correct code entry. Press Start to disable this effect.
Psychedelic mode
Hold L + R + X and press Left(2), A, Right(2), A, Up(2), A, Down(2), A during game play. A message will confirm correct code entry.
New family picture
Hold L + R + X and press Up, Right, Up, Right, Up, Right, A during game play. A message will confirm correct code entry.
Wrinkled family picture
Hold L + R + X and press Up(2), Right, Up during game play. A message will confirm correct code entry.
Dirty family picture
Hold L + R + X and press Left, Down, Left, Down, Left, Down, A during game play. A message will confirm correct code entry.
Suicide
Hold L + R + X and press Down(4) during game play. A message will confirm correct code entry.
Playable introduction sequence
Successfully complete the game, then start another game to play a "bonus level", which is the original introduction sequence with "director's commentary". To hear the commentary, jump on the crow that lands in a corner.
Monster Archives
Successfully complete the game after using the monster transformation as many times as possible.
Torque's Archives
Successfully complete the game after following the evil choices when given the opportunity.
Torque's Family Archives
Successfully complete the game after following the good choices when given the opportunity.
Constant images
When you enable the "All items and weapons" code or two or more codes, you will constantly receive images from Dr. Killjoy's room, where he has all the ink blot pictures everywhere on the walls where the man that had his eyeball taken off. To stop this side-effect, simply load a saved game before you entered the codes.