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about 3 or 4 lvls a place but if you go do stuff with your friend and he/she is in the mid. of it you could lvl doing that but you do have to do the quest again because you did not start when you have tobut side quests may lvl you up once or twice if you do them in random orders you can lvl more that is what i do at least from: izzy .d.r. ;)

fluffyboss4569 on Dec 31, 2012 wrote:

near 8 cause almost each world nearly levels you another 10

Not quite right. The higher the level, the more experience it takes to level up.
I would say no more than 5 levels in Marleybone.