To enable these cheats, you must first edit the autoexec.cfg file.  By default, this file is installed in the ea games\nightfire demo\bond folder.  At the end of the file, add the lines:

sv_cheats 1
console 1

Save the file and then launch the game.  During gameplay, press [~] to open the console.  Enter the following codes in the console window followed by [Enter].

To enable level select, edit autoexec.cfg as before.  Look for the sv_iamdone 0 entry and change 0 to 1.  If you can not find this entry, add sv_iamdone 1 to the end of the file.