"It's-- it's invisible. I think?" he says, glancing towards Rory to confirm that it's not just his eyes failing him, or some weird magic hiding it from only some of them.

"We should run. This position is bad for us." He can't keep either of them safe and keep his back to a wall, and who knows if the monster's attacks will escalate from just pushing. He'd rather keep moving, at least until they can decide what to do with an invisible creature anyway, and he shifts back to Luka's side so they can hopefully begin some kind of retreat while keeping the princess safe.