You can find match vids on Youtube; this game came out in arcades at the end of 2005, so it's been around for a while now.
Basically HnK is Guilty Gear XX with HnK characters. Same developer, Arc System Works, and same look to the game, with graphics, font styles, etc. Music is also along the same lines. The game isn't ultra-violent, but there is blood and the insta-kills are all true to the original.
Hyp: HnK already has several BEUs based on it, the last one being Legends of The Savior on the Playstation 1.