So, I have been stuck on this battle for two days. I finally relented and looked at a youtube walkthrough. My Nithral, acts nothing like the one in the video. He immediately activates a protective orb and stands there, Yes, the 3 hounds come. I kill them and Nithral continues to stand there in his orb. nothing touches him, I am repeled each time I get close. and he just stands there! I can let the game run and do nothing, nothing changes.
help?

I am trying the verify/repair link, but it is greyed out:(