"...hey. Jarvis?"
It's hard for him to think through the haze of-- everything-- but he doesn't have to, he lets instinct and muscle memory handle it. He feels distant from his own body, like it's a video game where he's controlling the character.
Someone turns on the hate beam again; he feels the sound vibrating his teeth. Jarvis turns on his music but he cuts it. Listening to music he likes grates more than the hate beam.
He can-- turn the feelings. They're going to boost up his hate? Well, okay, but these people made him kill Sasha, and Marlo is objectively an extremely annoying person but he didn't make Asher kill Sasha, and there is no one in the world he viscerally hates as much as everyone who was involved in the production of that fucking hate beam.
And he's not going to kill anyone. Kingpin is the person Asher hates most of all, and Kingpin doesn't give a shit about the lives of his minions, but he sure as hell cares about whether they turn state's evidence against him. He is aware vaguely that most of the time this is not his objection to killing people. He doesn't care.
Asher briefly considers destroying every computer in the building, but decides it would be more efficient to bomb the place once all the people are out. Stark Industries still has some bombs in storage from when they canceled their weapons contracts, enough to turn this place to rubble. It's hard to say he looks forward to it, because it's hard to imagine looking forward to anything, but he contemplates the mental image with a certain satisfaction.
Eventually, Asher tracks down the person operating the beam, knocks them out, moves the beam safely away from the person's body, and explodes the ray. He doesn't feel happy about it. (He doesn't know if he can feel happy.) But the satisfaction is there.
He wonders if at some point he will start calling that satisfaction "happiness."
Destroying the ray doesn't have a noticeable effect on how much he hates everyone here.