This video shows a few baddies and a cannon NPC among other small resources, which will be part of the upcoming Castle Quest.
For those wondering why it looks like a mine this is because the quest begins as a tunnel that leads beneath the Castle.
As usual this is entirely for demonstration purposes, the contents are subject to change. There is still quite a lot of work to do towards the meat and bones of the quest so a release should not be expected for a while yet.