After activating the cheat mode and starting a game, and activate the console (~)

You must first enable the ''console'' (see elsewhere on the codes list), then in the game, open the console and type:

The cheat mode in Opposing Force is activated in a similar way to that in the original Half-Life. In order to activate it you must edit the shortcut you use to access the game so that it reads:

C:SierraHalf-Lifehl.exe -console +sv_cheats 1 -game gearbox

(replace C:SierraHalf-Life with the appropriate path if you did not use the default)

-console turns on the console.
+sv_cheats 1 tells the computer to obey the cheat codes you type in.
game gearbox is present anyway, and tells the game to load Opposing Force rather than regular Half-Life.

Once playing, access the console by pressing the key left of the ''1'' key on your keyboard, and enter cheats here.

After completing the game and after the credits,the screen will go black.If you bring down your console and type ''brightness 9999999999999'', it will show you Shepard.