Ninetyfive radioactive energy cells have been deposited by a group of White Doves at Grand Central Station. This has rendered the station useless for strategic purposes. Destroy all the cells to make the station operational again.
The Energy Loop is a central circle with four loops branching out, as seen in the diagram. All segments of the tunnel system have energy cells and therefore all paths must be taken. Since time is limited, it is best to approach this mission in a systematic way. One possible path that is easy to remember is shown in the diagram.