Wing Commander 4: The Price of Freedom (PlayStation)
CheatingDome.com
Level Select
At the WING COMMANDER copyright screen, press Up, Down, Down, Up, R2 to access the cheat screen. If done correctly you will be taken to a level select screen. Choose your level with the throttle buttons.
Single-shot Kills
To destroy enemies with one shot, press L1 + L2 + Square at the same time.