Game Trailers have a couple of gameplay videos from the NY Comic Con: Castle storming gameplay 1 & Castle storming gameply 2 (featuring the Ogre once again). You can checkout all the videos, from the Con, from this url.
Edit:
Chris Priestly walkthrough vids added, part1, part2.
More information.
Edit:
Chris Priestly walkthrough vids added, part1, part2.
More information.