The Orc Revolution, a new patch for Orcs Must Die! Unchained, introduces two new maps as well as guilds and rating system. Robot Entertainment has prepared a lot of new content in the patch. Players will see the return of the classic survival battleground 'The Baths' as well as the new 'Throne Room' map. The developers added a 5-star rating system that promotes ambitions for high-score hunters. The system will pop up at the end of survival battles. Like-minded players can now organize themselves in guilds at will and head out together on the orc hunt.
Here's an overview of the new hero:
For the list of improvements and features check the official patch notes here.