Wing Commander 3 Cheats
Cheat Menu
Hold down the keys W C 3 when you double click on the game. Keep holding them down until a cheat dialog comes up.
Destroy Current Target
Hold down WC3 at startup and make sure cheatkeys is turned on in the cheat dialog.
When you are in a spaceflight mission press:
ctrl-d to destroy the current target.
ctrl-] to damage everyone
ctrl-[ to decrease damage.