Angelo kept fighting for what seemed like a battle with no end, every time he brought down one of those things two more took its place. he had to fight smart here and figure out where they were coming from or he had to start taking more out at once. Except his zanpacto was a defense type and he couldn't pull off the destruction that an offensive type would. Angelo was an assassin, he was meant to kill in silence not in a full scale war like this. Angelo fought through the chaos of the swarm so he would find a familiar or at least another shikigami that he could defend while they attacked.