Hayden flew straight towards ultron. Smiling he said "Hello bad boy!" And fired his flames at him he remembered what his mother tried to do with Alkhema and just tried that again. But this time the hero could breath fire. Ultron shuddered slightly but nothing else really happened. Ultron just chuckled and blasted him. He fell backwards "help!" He got up and aimed his pistol between Steve's legs to Ultrons face. Did I mention his bullets are made of vibranium? He fired them so they bounced between Steve's legs not exactly hitting him but gently brushing off him and straight to ultron. "Bye bye bad boy!" This may eventually get him.... No forget that he's shuddering again and wait? Shutting down? This may be a trick so he kept on firing.