To become a member of the Imperial Knight Order was to be the ace of aces, and to hold a particular position within the Order's Void Magic Squad meant that your skills had reached their peak. The Sniper that Rocky was pursuing was just such an individual!
Don't be fooled by his mere title of Sniper, for once Rocky caught up to him, his death was certain; but catching up was no easy feat, even though Rocky had dragged him out of the battlefield.
Facing Rocky's pursuit, the Sniper chose to make a desperate counterattack before being dragged into a dangerous distance and immediately halted Rocky's approach.
As the Magic Energy Arrows exploded before his eyes, Rocky was struck by several Magic Energy Beams. Though the White Demon Armor offered very strong defense, so even a direct hit wasn't much of a hindrance, he was still hit and unavoidably suffered a brief slowdown in speed.
And that pause gave the enemy an opportunity!