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Follow a waypoint marker through another drainage tunnel leading toward a shantytown. As you near the exit of the tunnel, drop to a crouched stance to activate your Optical Camo—there are hostiles patrolling the shantytown. Creep out of the tunnel and deploy your UAV to take a look around. Near the exit of the tunnel are four mercs patrolling. Some are equipped with shotguns. Instead of trying to take out all four mercs with one sync-shot, mark only two mercs at a time, preferably when they’re isolated and out of sight from any nearby hostiles. By setting up two separate sync-shots, you can easily clear this part of the shantytown without triggering an alarm.