The problem I am talking about is its not evenly done correctly, instead of npcs gradually increasing in strength we get jumps. So your either to weak for a npc or your to strong. Ok well anyway im done talking about this.
Okay, this I would agree. The variety is often quite limited, especially in some areas (like Ojaveda: rats or rogues, but nothing intermediate inside the town). And to know the possibilities you have, you first need to know most corners of the land.
Example: Rats - Gobbles - Clackers - sewer Tefusang - Consumer - hill Tefusang - gate Trepor - valley Trepors...
Before a newcomer will learn such a row of gradually harder opponents, he will probably run around several weeks, including many resurrections.
Or he would have to ask. But powerlevelers rarely interact verbally.