Hello!
This doesn't require to be member or anything like that, it only require that you are able to solo a dragon with 3600 health and Vath with 1800 health by hitting him for 40-50 normal and 90-100 critt. And that you have armors with 8-10 in rank, and I would prefer Dragonslayer at that rank for this fight.
It is possible to watch this clip in HQ.
I've made this clip myself in case you wonder about that.