Didn't this guy realise that he's become what he swore to destroy? He should feel ashamed to still be alive & using the beast-side power to kill needlessly. Crazed lunatic.
But I'm more frustrated by the MC. He doesn't want to kill, if at all. No matter how the enemies are the baddest bad guys that will threaten humanity. But animals? Okay to kill because they may be his food source. But humans? No-kill, even if they're genocidal maniacs. Selective much? There's no time to be picky.