One-Eye built a spear that utterly destroyed an ancient "Extremely Great" sorcerer Kina, when forces of considerably greater power were only able to trap her. Sure, it took him extra time to craft it, but consider the leftover time the entrapping powers had after imprisoning Kina in the plain castle.
A group of lesser light mages summoned a tree that still keeps an ancient Dominator underground. And of course, nearly any fool who stumbles upon a true name can use it to wholly disarm a demigod.
None of these are exceptions: interactions like these are the norm in the Black Company microcosm. Understanding this, it appears rather useless to try to force any kind of gaming paradigm onto the type of fiction that Glen Cook has written here. None of these categories hold fast in any significant way.
Those are some good points. Typical of Glen Cook there are no "untouchable" characters. Given the right circumstances even the gods can be brought down by mortals. This is even one of the themes of the IotN series with an "immortal" being slain by a simple cannon and coins at the beginning.
PS- did anyone receive my previous post?
I've seen 2 posts by you. The one about the wiki and this one. Steve