As Sebastian yanked the Ursaring around like a puppet, Aquilles lifted his enormous pincer into the air and prepared to strike. He looked over to Chervil, then back to Sebastian, who was still wrestling the Ursaring. When the bear Pokemon hit the ground, Aquilles roared and jumped into range of his attack, seizing the first opportunity he had to land a blow on the distracted intruder.
As the claw rose into the air, streams of water began to surround it, compressing against the pincer forcefully. As soon as his attack was prepared, Aquilles let his titanic claw slam down at full force into the Ursaring, unleashing his signature battle-ending strike: Crabhammer.
Aquilles had only used Crabhammer against Pokemon about 6 times outside of training as a Clawitzer, and once as a Clauncher. Four of those strikes completely missed his opponent, and the last three made different kinds of contact. One had slammed into the ground and sent his opponent flying, and another had simply grazed his target, but it was enough to end the fight. Only a single time had Aquilles ever directly landed a Crabhammer on his opponent in a true battle, and that attack was more than plenty to end the Pokemon's resistance. As well as its ability to walk. The attack had been used against a Breloom who found pleasure in tormenting the younger Pokemon of a marshland isle, and when Aquilles told the mushroom Pokemon off, had attacked him to try to prove its might. Aquilles was forced to use Crabhammer to end the battle after the Breloom turned to start attacking the younger Pokemon, and end the fight he did. Safe to say the Breloom wouldn't be causing much harm from his impact crater.
This Ursaring was a notable threat. Powerful and noticeably determined, Aquilles could tell that the intruder had no intention of letting up any time soon. So, in order to bring that end about sooner, and to return peace to the Society, the Lieutenant performed his duty and brought the attack down upon the invader.