Perdition's Mouth - Traitor Guard

From the publisher:

The Traitor Guard expansion brings a new playable hero and two alternative scenarios to Perdition's Mouth. The scenarios can be played as one-offs or as part of the "Abyssal Rift" campaign. The new Hero, Brother Örn, is a fallen guard who has been accused of being a traitor by his compatriots. Trustworthy? No way! But having a common enemy makes for a good motive for cooperation, especially if one is in dire trouble.

Perdition’s Mouth: Abyssal Rift is required to use the Traitor Guard expansion.