This is in Bulgarian, so I'll give you the basics in English:
* Maker is a HUGE fan of BoD
* The hosts in the studio are also fans of BoD, which is why they invited him
* 3rd person hack-and-slash, with great difficulty
* Game is 5 years in the making and the guy is making it on his own
And that's about it. Judging by the footage, the game won't use motion capturing, but the possibility of one isn't excluded.