Finished through the second dungeon on the flight home. Just under 10 hours in, I think. Having a blast.
I do wish that when you go to enter a dungeon it would tell you the rough level equivalent of the difficulty options. I’ve only done normal so far, but it would be nice to know when it would be appropriate to go back and try a harder difficulty without having to load in, find out I’m not prepared (potentially) and exit back out.