So the Hell Brute is done!
I finished filling in the musculature around the body and on the arm, and added cabling from the fits to the shoulder, and from the back to the hip. I would have liked to add more detail to the back and joints, but I need to be patient and allow the putty to dry entirely. Patience isn't my strong suit. So I have to call it done at this stage and just come back to it later.