So, Bruce created a barrier using the bodies of the other harpies. The creatures didn't have much room to attack the bodies of their friends, so that would delay them for long enough.
Bruce cautiously re-entered the boss chamber, greeted by a harrowing sight. Both the female survivor and the harpy were bathed in a gruesome sea of blood, bearing the unmistakable scars of a fierce battle. He couldn't help but admire the survivor's unwavering resolve in facing the creature alone—an act of courage and determination rarely seen in those willing to confront such formidable adversaries.