I tried multiple methods, seems like separating the attacks into different loras worked the best, so I would update them 1 by 1 here. this is a very difficult one, SD doesn't understand who's punching and who's getting punched.
Use regional prompt, latent couple, controlnet everything, you gonna need them. My advice will be dropping the facepunch lora to about 0.3 or turn it off when you are inpainting the character who's punching; increase the facepunch lora to about 0.8 for the character getting punched.
I had made 2 trigger words for this lora, 1st is yomama_face_focus, 2nd one is yomama_half_body, now with the half body one you should get the bigger frame done, i suggest using that in txt2img, use face focus on the character being punched in inapint.
It is a very difficult one, but with some patients and time, you will get the results. I have uploaded some openpose as training data.
As always, have fun and go break some eggs!