maybe that changed in 5E, but level 3 characters in the underdark? wouldnt they be shred to pieces in seconds?
even later in the game, the underdark is extremely dangerous, especially to those not native to it. In addition to "general life threatening dangers" (which will most likely not be implemented in a CRPG), the underdark is the home of predators like aboleth, beholders, cloakers, derro, drow, duergar, dwarves, illithids, kuo-toa, driders, and svirfneblin.
since level cap is 10 the underdark seems rather unfitting to me (like: the underdark in BG1?)
