I haven't seen any of the bosses or enemies beyond the first three basic types you encounter around your starting point. I can at least develop a character, explore the different regions and get a good feel for the game, then maybe I choose to stop or to enlist others to play with to make it better. Or other games win out temptation wise and I move on. I had forgotten the characters and worlds are saved separately, which makes you less locked into a single run.