Press the "~" key to bring up the console and type these codes in to do the desired effect. If you see a "1" or a "0" Change it to the oppostie and it will turn it on/off. If you see any thing with "[]" around it you replace it with what it says.

gameLogic.togglePause - Toggles pausing the game
renderer.drawConsole 0 - Turns off access to the in-game console
demo.recordDemo [demoname] - Starts recording current gameplay and saves the file as demoname.bf2demo in your \Program Files\EA Games\Battlefield 2 Demo\mods\bf2\Demos directory
demo.stopRecording - Stops current demo recording
renderer.drawHud 0 - Turns the Heads Up Display (HUD) off
renderer.drawFps 1 - Displays the current and average frames per second (FPS) in the top left corner on
localProfile.setName [name] - Set Profile Name
localProfile.setNick [nick] - Set Profile Nick

Locate the file "unlocks.py" located in Program FilesEA GAMESBattlefield 2pythonbf2stats (or whereever you installed Battlefield 2, in the folders pythonbf2stats), and open "unlocks.py" with Notepad.(Before you open unlocks.py, you should make a backup of the file "unlocks.py" (just copy and paste the file) and rename the file to unlocks1.py)Now you should see a whole bunch of codes. Press CTRL+F and find the word "defaultunlocks" (without the quotations).this should highlight the line of codedefaultUnlocks = [0, 0, 0, 0, 0, 0, 0]change all the "0"s to "1"s, so it looks like defaultUnlocks = [1, 1, 1, 1, 1, 1, 1]and now press CTRL+S to save.Note: this only works for single player, this trick works for multiplayer, however, EA Games will ban your CD-Key for a week if they discover you are using this for multiplayer. So just replace the unaltered backup file of "unlocks.py" for multiplayer and vice versa.