During play, hold L + R + X and enter the following:

Full health:
Down, Down, Down, A, Up, Up, Down, Up, A

Full Xombium bottle:
Right, Right, Up, Up, A, Left, Right, A, Right, Up, Right, A

Refill ammo for current gun:
Right, Right, Down, Up, Left, Right, Left, Left, A

Refill ranged weapon ammo:
Left, Left, Up, Down, Right, Left, Right, Right, A

Shotgun with full ammo:
Left, Left, Left, Down, Down, Down.

All items and weapons (except for Gonzo Gun):
Down, Up, Down, Left, Right, Left, A, Up, Left, Down, Right, Up, Right, Down, Left, A, Down, Down, Down, A, A.

Gonzo Gun:
Left, A,A, A, Right, Left, Right, Left, Up, A, A, A, Down, Up, Down, Up, A

Grenades:
Right, Right, Right, Left, Left, Left.

Molotov cocktails:
Down, Down, Down, Up, Up, Up.

Increase negative karma:
Left, Left, Down, Up, A

Overcome insanity:
Right, Right, Right, A, Left, Left, Right, Left, A

Bloody Torque:
Up, Down, Left, Right

Clean Torque:
Down, Up, Right, Left

Old movie mode:
Up, A, Left, A, Down, A, Right, A. Press Start to disable.

Psychedelic mode:
Left, Left, A, Right, Right, A, Up, Up, A, Down, Down, A. Repeat to disable.

New family picture:
Up, Right, Up, Right, Up, Right, A

Wrinkled family picture:
Up, Up, Right, Up

Bloody family picture:
Left, Down, Left, Down, Left, Down, A

Dirty and wrinkled family picture:
Left, Left, Down, Up

Suicide:
Down, Down, Down, Down.

Monster Archives:
Beat the game using the monster transformation as often as you can.

Torque's Archives:
Beat the game by following the evil choices.

Torque's Family Archives:
Beat the game by following the good choices.

Thanks to Revolution readers Ian Is Pro and Lewis wanda!