This is a pretty neat little demo. You're sitting on your virtual sofa playing with a mini knight.
Reminded me a little of the Chucky movie?
You can either run around yourself using the regular keyboard controls as follows or with a controller.
To get started:
Download The Couch Knights Unreal Engine 4 Demo
Ensure your rift is set up in Extended mode. For me the demo worked great with my DK2 set up as my second monitor (extended)
Then browse to the following folder:
CouchKnights\CouchKnights\Binaries\Win64 [Assuming Win 64]
Enjoy being a little Knight!
BTW. If anyone wants to know how to get multi-player working, let me know and I'll post that also. You need 2 PCs to do that though.