Each boss requires complex mechanics to successfully complete. While some are easier than others, remember that you are dealing with several factors: 1) public fighting. People are watching. Bot screws up, you may be reported. 2) complex bosses. Success rate goes way down. Was gonna talk about death in an instance but it rez's you outside automatically. For some of the earlier bosses it could probably be done. But I know a few that HB will not be capable of.