I for one didn't understand the first and the last boss of the dungeon. Died to the second, but at least learned something from it.
But that moment when the first boss went "now you no longer understand my mechanics" when I did not understand them anyway - hilarious

As hilarious as the "dungeons are hard, deal with it" crowd, which always needs to call others names instead of simply making their point. Makes you really wonder why it's always the unpleasant personalities that want harder content.