Escape From Orc Fleeing Final Install

What is the ? (Sci-fi, high fantasy, or gritty medieval?)

The climax of the Fleeing Final Install occurs at the Great Divide—a massive stone bridge guarded by the Warchief’s elite guard. This is a multi-stage encounter that requires you to use everything you’ve learned.

The fortress of Thornwatch has fallen. For seventy-two days, it held the line against the Orcish Horde of the Ashen Maw. Now, its walls are rubble, its banners burned, and its defenders—what remains of them—are fleeing into the labyrinthine catacombs below.