I'm having a devil of a time trying to remember the title of a book I read sometime in the early eighties. It may have been written earlier than that, and there were indications that it was part of a larger series though I can't remember reading anything else with the same character. All I can remember is that the protagonist was a tall figure, not entirely human, who wielded an exceptionally large sword. The novel was rather dark, gritty and battle-oriented. The only specifics that I can remember at the moment is late in the book, when the protagonist enters a forbidden temple, the interior of which is entirely in darkness, and battles a huge, slimy worm-like creature to rescue a lady. I seem to remember there being intimations that the protagonist might be an avatar or manifestation or agent of the god of war, though he doesn't know it. Sorry I can't be more specific than that. The book left an overall impression on me, but the particulars are lost in time (guess that means I'm getting old, eh?) Thanks.