The whole problem is that it takes a lot of time. Time I don't have. So good luck with that. So, unfortunately, I'm not aiming at best-possible-quality for every major push.
Anyways, I'm now reworking all the Undead classes. Which hopefully fixes the problem of getting stuck in them, if not, it's still a good update (for the code, that is). I'm considering to disable bosses in the meantime.
@ 9-th Dragon: Katana support has been added now for the Grave Digger.