This instance is by far the hardest instance in the Epic Line. It was first released as six person group instance when Moria was launched and the level cap went to 60. It was so difficult that even a full group of all 60s could not do it in many cases.
Originally Posted by LordoftheThings
I believe only did the full group version with my Guardian in a group of 60s. You really had to be good to do this instance.
My recommendation is come back later. The solo version should be doable by a Guardian in their 50s. Try it again at 54. I know people who still can not solo this instance (especially Hunters) at 60.
As far as game play, you have to keep ahead of Narmelleth so that she does not aggro lot of stuff. While she is beating on the last mob. Go make the next pull. Bring a small group back to her. Do not let her run into the crowd.
Unless stated otherwise, all content in this post is My Personal Opinion.