Koren doesn't seem to be bothered by Guppy's knee, but as Guppy enters the path of Atton's sword, Atton flicks it about. It still hits Guppy's back with rather a lot of the force, but it hits with the flat of the blade, instead of the edge.

Will's sword leaves a long trail along Koren's torso, bleeding luminous blue liquids. Koren makes a rather unpleasant, raspy noise, turning on Will and swinging at him.