Here "it" refers to the city which represents the people of the city. AT: "They attacked the people of the city" (See: [[rc://en/ta/man/translate/figs-metonymy]])
"with the point of the sword." Here "sword" represents the swords and other weapons that the soldiers used in battle. AT: "with their swords" or "with their weapons" (See: [[rc://en/ta/man/translate/figs-synecdoche]])