Take it as a part of the hard ninja train nya!

Level difficulties, yet there are already a lot of 50, it is the ninja way. (Well, to be honest, from 40 to 50 FATE is the faster way anyways).

If you feel you really need dungeons.....Pay a tank or healer for each run. (I paid a lot to a tank for doing relic with me... First relic I do without queuing DF alone, but... Situation of 2.4 required it, I didn't want to have my relic next month just because waiting for a content we can clear in 2 hours.)