Honestly I'm expecting Shigaraki to be the one that takes out AfO. And I don't mean as him redeeming himself or anything, but AfO's arrival irritating him and causing him to strike him down to be rid of him.
This chapter looks amazing! It's unfortunate that Stain was simply there as a moral support, but at least he has some screen time. Excited for the next chapter (hopefully it would be the last for this particular fight).