-Enable the "Bodog Stampede" code and go after the gangs with it. The gun will have unlimited ammo and enough armor to take them all out. If you vehicle‘s health goes down, enable the "Repair vehicle" code. However, make sure you move your Hummer once in awhile or they will pull you out. This also is very useful when taking over the storehouses because of all the armor the Hummer has.
-Use the following strategy to eliminate gangs during cop interference. If a cop comes by during a fight with a gang, run by his vehicle to make him ignore you and go after the gang instead. When he is killed, resume your fight against the gang. Don’t forget to put your weapon away or you will have to evade the cops.