My first group there we actually wiped a few times on the first boss, the adds weren't being taken care of promptly enough so boom oneshot. The final boss seemed fairly straightforward, however it's well tuned to be a decent challenge even when played right.
The first group I went with we won after a few wipes but I wasn't paying attention to what happened. The 2nd group we wiped 5 times and only have 5 minutes to try again. I did pay attention. The adds weren't being DPS. I said stop attacking the boss. And then I saw people standing in the "fires". I will keep at it cus the exp was nice however..