The Red Dragon Inn: Battle for Greyport – Chaos in Copperforge

From BoardGameGeek:

Copperforge is a gnomish city, and the center of arcano-mechanical invention in the world of the Red Dragon Inn. It's Wizgille the Tinkerer's hometown, and normally it's the picture of peace and prosperity. Unfortunately, there are new and nefarious bad guys bringing all the cogwheel-ed chaos you can imagine to town! In this expansion to our cooperative deckbuilding adventure game Battle for Greyport, you'll be able to protect the landmarks of a whole new city, halt a train heist, and KO steampunk-flavored mecha pilots. New Scenarios, new Bosses, new Locations and new Monsters are all a part of the package! EIGHT new playable heroes come to the game in this expansion. In addition, a new Contraption mechanic shakes up the game. Contraptions begin play ‘attached' to Monsters, enhancing them with new or stronger abilities. When a Monster with a Contraption is Defeated, that Contraption becomes a resource for the heroes instead, to be played like an Item card. -description from designer