The loss of his gun didn't really bother Gareth. He had something in his arsenal that he could work with even better than a boomstick, after all. No, what troubled him was the fact that this guy had killed a crap ton of people in several gruesome ways. Not even that he had been singled out. Just that those people had died unnecessarily. The two stared each other down, black against red. He didn't know why he'd gotten chosen to survive or get in a duel or whatever this asshole had planned for him. Gareth grit his teeth, he wasn't too afraid of dying, really. Once a child accepts death as an event that will happen no matter what, the concept no longer held much of an effect against him. Nothing but a long rest, right?
It seemed that the arrival of the Heretic had lifted some kind of metaphorical weight off of Gareth's shoulders, since the man seemed to actually relax in a situation tenser than... Well almost anything, actually. He actually stifled a laugh a little bit. "Heh. End of the line," he mused before looking straight into the Heretic's eyes.
"Guess this is what Dad'd call a 'good death'," He chuckled, "Ah well. It was a good run, short as it was." He brought up his arms in an exaggerated shrug, smiling all the way. "Maybe it's hopeless, even from the start, but I'll match your power to the very end. I will die standing."
With that final declaration, fire sprung to life in the red knight's hands, hotter than ever. Using one hand to create a type of thruster, blasting himself forth, and the other to form a type of 'heat blade', Gareth made his charge.