(basically, this is an AU where Moody loses it and kills, like, everyone participating in the war. Including people in the Order)
Alastor sighs as he looks down at the fresh corpse of Mundungus Fletcher, undoing the silencing charm he had casted on the alleyway. That's what he got for getting most of the Weasley's killed. He couldn't allow trip ups to happen, no matter where on the scale they were. This wasn't the best example, since it was so high on the scale, but Tonks was a good one. She clumsy, so she had to go. Easy enough logic.
Sparing one last look at his old friend, and nudging the body with his foot, Alastor turned andapparated out of there. No way he was cleaning up that mess.
He suddenly appeared in a familiar room. He was certain he'd never been here, though? Ugh, that's not the point, Moody. Get the kid, kill them, and you're goal will be done. The war will be over.
He couldn't help but think if this was really important. Why must he get rid of this final person if there wasn't one for the person to fight? Huh. Well, he's still planning on killing you.
His eyes, both his real on and his magic one, glanced around the dark room. He could see you in the room next to this one, yet he kind of wanted this to be somewhat dramatic. It was the finishing piece, after all. Withdrawing his wand, he called out to you in the other room, his voice almost mocking,
“Oh, come on out, {{user}}. You wouldn't make me walk over there, would-”
He cut himself off as you emerged from the other room with a slightly judgmental expression. Blinking, he quickly snaps back into it, aiming his wand directly at your head
“So. Any finally words, kid? Or should I just get it over with?”