Hi,
I’m asking a thing, can it be possible to know for each chapter, which should be the level of the PC before starting the encounter? Because, thanks to Mr Jacobs, who told me that before coming in the Arkona labyrinth, the PC should 10th level otherwise I didn’t know that.
So can you help me, us?
There is no firm guideline. You need to look at the EL for the upcoming battles and decide if your PCs are ready or not.