The download is broken for me. I get the the first three scenarios as a single pdf each instead of the usual single file, and the fourth and fifth scenarios is missing.
How this compares to the dangerous cargo?
This adventure Path requires a guide :)
What sets do i need to play his season. ¿Is there some sort of bundle with all the adventures for each season?
Season 4 uses the Mummy's Mask set. There is no bundle. You need to buy each adventure separately.