I kinda understand what Tabris means but not quite... for example,right now,to level my stats and BR i'm fighting in Fornstand...one of those normal beetle type monsters,with Jump Press III,give all my unions an upgrade)i'm BR 78 now,even if there's only 1 of them,and the battle takes like 3 minutes...since i have no quests left,it's the fastest,except maybe the Ancient Ruins,to gain levels and upgrades in strenght,HP etc etc that i can find.
Mejilan,you don't have to always play like Tabris says(even if his way works also),and i'm pretty sure you will love this game.