Take out all of the field ops.
Prototype 2 features three different types of hidden locations to find; Black Boxes, Infected Lairs and Field Ops Teams. This guide will help you find all 28 Field Ops team locations.
The map in Prototype 2 displays coordinates as you move the cursor, so to find each Field Ops team, move the cursor on the map to the coordinates below and set a waypoint to that location. As you get closer to the correct location in the game, it will notify you in the top right corner of the screen that a Field Ops Location is nearby and it will show their icon on the mini-map, so they are hard to miss once you are close enough.
As you eliminate all of the Field Ops teams in each set, you will earn a new mutation, and once you have found all 28 Fields Ops teams you will earn the “Up To No Good” achievement that is worth 30G.