OP this game from your first level 1-50 is nothing but a tutorial , SPOILER, sorry but nothing is difficult prior.
Being both Healers ( SCH and WHM) and also Tanks I would agree with everyone stating that the game spikes at brayflox.
Skipping over Cutter's cry..unless you're a SCH, and yeah everything after might pose somewhat of a decent challenge.
I don't like to bashful but everyone has their coming to reason moment and I think you'll just have to wait and see the coiling yourself especially
in a vital role such as the WHM, but by the time you reach end game for 2.4.

Good luck and happy gaming