The reflection hits the floor hard, and the spikes of ice leave it bleeding, but it stands up and keeps coming--it's still ignoring Wriothesley entirely, focused solely on Lyney.

Lyney pulls out and unfolds his bow, quickly stringing it, and looses three burning arrows in rapid succession. They skewer the not-him with somewhat alarming ease, the force sending its torso jerking back, and then... it collapses, dissolving into a puddle of reflective water.

"What," Lyney says with great feeling, "the fuck."