How to play difficulty 10?

What is the general strategy for difficulty 10? I just played randomly with level 140 guys on the highest difficulty and they don’t even use guns. They all brought the AT turret that you sit in, and the recoil less rifle and shot down drop ships before the bots could unload. There were still a lot of bots on the ground but they were able to run through them without dying. Somehow they were able to split up and solo heavy encampments and finish objectives. I had heavy armor but I would die in 2 shots. What is the load out that would enable me to solo a heavy encampment or wait solo to raise a flag when being surrounded by heavy bots? For reference I only have the free warband and I have unlocked up to the diligence counter rifle.