Pathfinder Adventure Path #145: Hellknight Hill (Age of Ashes 1 of 6)

Fires burn atop the ruined citadel on Hellknight Hill, sending plumes of red smoke into the air that could be a call for help. Within the old keep, strange invaders from a distant land, mysterious long-lost ruins, and the machinations of a shadowy organization await discovery. Something dire is building toward an apocalyptic event, and it falls to your characters to stop the end before it begins. The Age of Ashes Adventure Path begins with “Hellknight Hill”—a complete adventure for 1st- to 4th-level characters.

Age of Ashes is a 6 part adventure that runs from levels 1 - 20, Maps are available as a separate product

Disclaimer: This was the first Adventure Path released for the Pathfinder 2e system as such the difficulty curve is a little on the high end if run as written.