I found three paths to the map telling me the EA starting area is limited (ending?). However, I have not gotten through all the underdark content. There are a lot of hidden quests, puzzles, etc, that is not hinted at. Which I kind of like. I can see a desire to have something help show their existence, however, it is very DnD to have things just there, and YOU have to find them and unravel them.
I haven't come across any riddles, which would be nice.
