Cleared rank4 successfully 3 times today (was my first attempt)
The first week I cleared ranks 1-3 each day, since my OCD would've kicked in to leave those clear-rewards unclaimed I guess, so this was my first attempt at the rank 4s. xD

It was definitely very challenging, but not impossible like I expected it to be for a F2P player like myself. Which makes me happy to know that it's still possible to clear end game content even as a F2P.

Though I suspect not all the other elements' rank 4s will go as smoothly as this I suppose...