I shall give you a hint to get the maximum amount of levels in broken valley:
first: Kill all the enemies you can find in Broken Valley this includes also lovis his tower and the maxos temple until you reach the portal to sentinal island DO NOT STEP INTO THE PORTAL.
second: pickup all the quests you can get your hands on.
third: mindread the ones you think you need to solve quests or get acces to storage etc. ps some mindreads are better AFTER you solved the quest(s)
fourth: solve all quests
fifth: If you have done all that., you have a big experience debt
now go to the Maxos temple and step into the portal to Sentinal island and mindread the "Island" you get a level and you debt is gone;)
a note: there are cut scenes in broken valley try to avoid them because some mindreads must be done in the cutscene and then you don't get the most out of your experience.
