I DON'T NEED YOU.
Bone Head was difficult. I sat in one spot with my incendiary sniper and critical'd away at his face. After a bunch of deaths I just ran him over.
Wait, you can do that? Where do I get a buggy then?
Yup. Have you done the Catch-A-Ride mission? If so, you should be able to go spawn a vehicle and just ransack his group. Are you playing alone? I did this online.