I am destroying my hands to do so, yes, but I have made it back to stage three of the "real shit" portion of the moonfire faire climbing tower, where I hadn't been able to make it back to after falling from there the first night.
there is no prize for finding the secret path around the back and starting the true dark souls of platforming, just an honorable screenshot possibility.
you're given the prize, a fairly nice summery bathing suit costume for just doing a pair of simple courses and doing a quest about learning humility.
Then, if you notice this spar I've marked with the teal arrow, you can jump on it and enter the zone of suffering with other nerds like myself.