Pathfinder Adventure Path: Iron Gods Part 2 - Lords of Rust

The Lords of Rust dominate Scrapwall, and their swiftly rising power
threatens more than the town of Torch. For they have the support of one of the
Iron Gods of Numeria, and what slumbers fitfully beneath the wreckage of
Scrapwall could catapult the Lords of Rust into a new level of power if they're
not stopped!
A Pathfinder Roleplaying Game adventure for 4th-level characters,
Lords of Rust continues the Iron Gods Adventure Path, an
exploration of the lands of Numeria, where savage barbarism clashes with the
wonders and horrors of superscience.