To use these first press [Enter], enter one of the following codes, then press [Enter] again to activate the corresponding cheat function:
iamchucknorris - Level skip
chucknorrishim - Kill selected unit
lethimbechucknorris - Increase unit level
openforchucknorris - Unlock all campaigns and missions
tobechucknorris - Invincibility
gimmechucknorris - Unlimited resources
If the [Enter] key doesn't work for you try pressing the [Right-Control]+[Enter]. Also, there should be a notice on the screen in white-coloured text explaining the cheat effect, if it was entered successfully!