This USJ battle has really slowed down to a crawl: the only thing of note that happens is that All Might defeats Nomu.
Granted, that’s a big deal, as Nomu was hailed as being at least as powerful as All Might—indeed, he was created for just that purpose—it’s just that the presentation of his duel with Nomu underscores the fact that this is merely a competently-executed shounen superhero show with little in the way of creativity to offer, at least at this stage in the game.
I was, perhaps unfairly, hoping for more a little more innovation or comedy a la Flamenco or One Punch, but events remain steadfastly (and rather boringly) serious, intense, and slow.
All Might can’t beat everyone alone—brawlers like Bakugo, Todoroki and Kirishima swoop in to stop Kurogiri from slicing him in half with his warp clouds—but it’s not long before students and villains alike simply stand off to the side and gawk as All Might and Nomu go at it mano-a-mano.
Shigaraki tries to add some philosophy into the battle about good and evil and violence, but it’s neither convincing or compelling; these are bad guys, pure and simple, and they need a good beating. All Might delivers an over-100% street brawl that manages to overwhelm and launch Nomu into the sky, and just like that an implacable foe is…neutralized.
My understanding coming into the episode was that this was going to possibly be All Might’s last moments: he was already at his limit when he arrived, and the “less than a minute” of power he had left was certainly stretched out over more like ten minutes. He’s also steaming by the end, as if he could revert to Heroin Might at any moment.
But Shigaraki and Kurogiri are still standing and ready to fight, even without Nomu, and unless other heroes/teachers show up, it will be up to the students to finish the last of the villains off in episode 13, if they can.