In order to start this mission, you have to get to location [311, 1293].
Very important information is fact, that the terminal can be used only by soldiers, scientists and Blackwatch employees, so make sure that you have proper disguise and no one can expose you during shapeshifting. Interact with the terminal (B button) in order to get instructions.
It is best to start the hunt with getting to the rooftop of one of the highest buildings in the area. Only then send an impulse (press left analog stick), so you'll easily find the location of the corporal you're looking for
Corporal should patrol the area near the church, where you'll meet with father Guerra. His approximate location is [315, 1215]. Make sure that corporal is not observed by anyone and consume him (button B and button Y).
Learn more about the Clean Sweep | Blacknet missions by checking this Prototype 2 Guide shared by Gamepressure.com.
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