Hello fellow Bloodscalpers!

I need some help with the achievement "Have... Have We Met?" With Mists of Pandaria being to focus of just about everyone, it is nigh impossible to finish getting this achievement for the title " The Flamebreaker"

I only need Thassarian and if i'm not mistaken, he only appears alongside Alliance. Wondering if something could be worked out and I could get some help with this. Would gladly do to same.