You can activate the Declassify Mission by immediately examining the skull to the right. This declassify mission will allow locusts to use Oneshots to protect their mortars. If you have used a Oneshot before, you should already know how fearsome these heavy weapons are. There's a gnasher turret in the left side of the path so you can take it and deploy it in one of the pathways there to provide extra firepower. Aside from potential Oneshot shots, you have
The Oneshot grunts are camped in the mansion's balcony so from from cover to cover and don't allow them to line up their shots on you. There's also a mortar grub on the high ledge to the left and on the top of the mansion so take them out as well to avoid further casualties.
After clearing the area, your team will regroup to the exit. Before completing the section, enter the fiery garage by following the ramp past the exit. You find the COG tag beside the shelf on the left corner. Regroup with your team to exit the area and complete the section.
K. Sutton, PVT, New Sherrith