Hardline
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

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