By
eHow Hobbies, Games & Toys Editor
Difficulty: Moderately Easy
Step1
Open the game's Properties menu by right-clicking on the program file. Don't actually start the game yet.
Step2
Click on the "Shortcut" tab on the top of the Properties page and look for the current file and path for the program displayed in the Target box. Add "-devmode" to the end of the line. This will add the code needed to make your all weapons cheat work.
Step3
Start the game as you normally would. Once you begin playing and the map is loaded, type "i_giveallitems" in the command box available during play. The command must be entered exactly as shown here.
Step4
Continue typing "i_giveallitems" until your ammo is full. Once your ammo is full, the game will then give you every weapon available.
Step5
Press "2" on your number pad to supply your newly acquired weapons with unlimited ammo. A separate number pad, other than the keys above the letters on your keyboard, may be required for this cheat to execute properly.
Step6
Blast your opponents away using the best weapons in the game. Some weapons require you to hold the fire button for up to 10 seconds before it fires.