The game is not actually hard, its just required you to think more, rather than just rush blindly into a horde of mobs, thinking that you are in god mode. When you 1st enter broken valley area, best is to clear out all those goblins and wild boars in the wild. As you level higher, you eventually get lesser exp from killing lower level mob. Quest exp wont change no matter what your level is. I re started a ranger recently in high difficulty and can easily reach lvl 5 by just killing mobs in the wild without doing any quests.
