In the "hardline.cfg" file, enter the following line at the end. It's case sensitive, so type it exactly as shown:
CHEATING IS SOMETIMES USEFUL BUT FOR HOW LONG ???
Now during the game hit the following keys:
- BACKSPACE -Kill all enemies on screen
- HOME -Gain main weapon ammo
- INSERT-Full health
- PAGE UP-Gain accessory weapon ammo
Thanks to Revolution reader Helmut Kohl, Jr.!