Place the following line as the last line in the "hardline.cfg"
file. Type it exactly as shown or it won't work (note
case sensitivity and spaces):
CHEATING IS SOMETIMES USEFUL BUT FOR HOW LONG ???
When enabled, the following are the cheat keys:
X = invincible
BACKSPACE = kill all enemies on screen
INSERT = full health
PAGE UP = adds accessory weapon ammo
HOME = adds main weapon ammo