Unlocking cheat menu. Go to the options screen, hold Left Shift and type “desertwatch”.
Blowing up SCUDs. Usually, you have to do that with the sniper rifle only if they are in the launch position. There's another way to blow them up. Just shoot the rocket a few times with it.
Tricks with tank mines. When you are playing on some levels, it can be difficult for you to deal with tank mines. In this case, you should throw a grenade on them thus making them explode.
Destroying helicopters. When a Hind appears, it will hover above you and start shooting. This unpleasant situation usually happens, so take a sniper rifle and shoot its belly twice to destroy a helicopter.
Destroying SCUDs. It will be quite easy for yo to destroy SCUDs with the Bradley’s grenade launcher or by machine gunning them.