There are 6 bandits camps to clear in the game. To clear a Bandit Camp you need to kill all bandits in the area. They are easy to kill with a headshot (Which will also help you progress towards Bronze Headshot 30 human enemies). Bandit Camps are marked on the map when venture near one, or when you override Tallnecks. The symbol for a Bandit Camp on the maps looks like a tent with a skull underneath.