Turn On Cheat Mode
To turn on cheat mode, so you can enter cheat codes, first download game patch to at least version 1.03. Then edit the config.cfg file and change the line that says
uset g console "0"
and change it to:
uset g console "1"
Once the line is changed you can use the tilde (~) to open the cheat menu and enter the cheats. Don't forget to make a backup of the config file before you edit it.