From your description of the beast, I believe you must be speaking of Sarkoth! It is no wonder that Hana'zua was overtaken by it. Aid will be dispatched to him immediately, trouble yourself no more with Hana'zua's plight.
However, I must say, I am most impressed to hear that you brought Sarkoth to death. It is a feat to be proud of, <name>. And that you would fight for a stranger's honor, while other tasks occupied your time, your own honor is heightened.