Xena: Warrior Princess

Who doesn't like leather-clad babes? :)

Level select:
Highlight "New Game" at the main menu and press Triangle, Square,Circle,Triangle, Square, Up(3).

Invincibility:
Press Up(3), Circle, Square, Up, Right, Left at the main menu.

Full shield and attack:
Press Triangle, Square, Triangle, Square(2), Up(3) at the main menu.

A sound will confirm correct code entry. (Information from Cheat Machine)