Crysis 2: PT 27: Lab Rat (5/8)

The Lab Rat mission - Take out the Cell Gunship by armoring up and shooting out the machine gunner. Use the small room near the elevator to restore your energy and take out the Cell soldiers who try to flank you, then switch to a scoped rifle and kill the Cell who come in through the glass roof. One of them will drop a JAW. Use it to take out the helicopter for good. http://www.gamefront.com/crysis-2-walkthrough