Ring of Fire

After Thunder Head Keep, I was transported to the Ember Light Camp. I didn't really have a lot of trouble doing the quest to get to the Ring of Fire. I attacked from the left, uphill, side of the island, when I got to the location where the Inner Council members were.
From there to the Ring of Fire by boat.
The Ring of Fire was a little tricky because you couldn't stay in the lava long. You had to run through, and not stop, unless there was a place you could stop.
The best way to fight by the force fields was to withdraw, and try to draw some of them to you. It's not a good idea to try to fight them all at once.