Brief experiment: Rolled a throwaway Monk, found dungeon due north of the starting town I couldn't be bothered to do anything in outside of being surprised to see such a large starting town with multiple screens to it and whatnot, entered, hit the l key as per the manual's section on Dungeon contextual key presses---light radius of a few tiles activated...quickly assailed by 3 foes in the open unto death, but hey...that sorted it!
Also works with Fighter, the new Shaman, presumably the rest in a similar manner.