Level 17 Sith assassin, it was hideously difficult. I was the only person on my server so no help to be had. Turned level 18 at the end. Doing the bounty hunter took a run and die method, stealth was useless. But I got increasingly determined to finish. Was it worth it? probably not
I have half done it on a level 16 assassin on my destination server but having finished the character above I decided I couldn't face trying the bounty hunter again and adding in the joys of a busy PVP server on the last night of the event.