i don't believe that there is a way.
go to options menu and click unlock items
no
doom
On the main menus enter the cheats there and it will make a noise to tell u that it is done then the option "cheats" will come up that is where u enable them
ull find any cheats u might need here: http://www.gamespot.com/pc/action/doom3/hints.html?mode=all
i dont think so that you can do that
After you type in the cheats yes you do press enter.
you go to the main menu then extras and type in your codes
go to where it says 'extras'and it should say 'enter cheat code entry'.
how do you enter cheats on ds
On the game there is something called hacking go on it and enter the cheats
There are no cheats.