By this point in the battle, both the Alliance Army and the Imperial Army were chaotically intertwined, having fully engaged in the most intense and brutal close-quarter combat.
All of the Void Magic Warriors from both armies were mixed together, their formations long since disrupted, to say nothing of squads that had been scattered in the confusion of the melee.
Therefore, when Rocky followed the direction from which the cold arrows had come, his vision was filled with people—enemies and allies alike. In such a situation, it was difficult for him to even distinguish who was who, let alone locate the Sniper hidden in the shadows.
Left with no choice, he had to slow down his pace, then constantly look around, scrutinizing everyone nearby as best he could.