Enable access to the console by adding the following to your steam parameters or to the end of the game shortcut for the retail release +set com_allowconsole 1 The console can then be accessed in game by pressing the tilde (`) key to the left of the 1 key on your keyboard. The following commands can then be used in the console to activate various cheats. These commands are generally set to 1 or 0 to enable/disable the effects. To reverse the effect add the opposite amount to the variable. eg cvarAdd g_permaGodMode -1 will disable god mode.

Effect	Code
All Items Cost $1	cvarAdd g_vendorSalePriceScale -1
Disable Gore	cvarAdd g_EnableGore -1
Enable God Mode	cvarAdd g_permaGodMode 1
Enable Infinite Ammo	cvarAdd g_infiniteAmmo 1
Infinite Vehicle Boost	cvarAdd vehicle_infiniteboost 1
Vehicles Take No Damage	cvarAdd vehicle_god 1