"Some murderous criminals have escape from thefort and are hoping to flee from Havana at the first opportunity. Find and kill them."
Begin your approach on the Restricted Zone from the Northeastern corner of it. Climb the scaffolding then disable the Scout on the rooftop. Move to the nest rooftop to identify your target. As soon as you lock onto him, he will enter into an argument with the guards. He will go to flee, stop this with a Berserk Dart.