Not_an_Owl posted... Depends how hard you want to go. From about 16-30 dungeons grant multiple levels per run, and from 30 to 50 it's about one level per run. If you nolife it you could be done in a day or two, but on a more relaxed schedule you could do it inside a week. The longer you take the more levelling roulette bonuses you can get, and that also decreases your total dungeons required.
Hmm alright. Also the general idea to get to 1-20 fast (to unlock dungeons) is to do that monster journal thing and some of those monster based quests that use points right?
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