I think I saw this in the late nineties when I was a young child, it started with a scene showing the aftermath of a battle and focused on a head on a pike. I can't remember if it was a creature or a human though. I also vaguely remember a man (the hero) running out of a castle with a woman and the big boss battle (I think it was the boss) was some kind of demon thing. Don't quote me on this as my memory is not clear but I remember it looking like a centipede-spider thing but it had the torso of a woman like a centaur.