To avoid disappointment while watching:
You will NOT see any bosskill from Hyjal in this movie. It's technically impossible to solo them. This movie will show you why. If you're expecting to see Archimonde getting soloed then do not watch this movie!
I made this movie because I like making and editing movies and because I especially like trying to solo content. It's the one last thing in the game that even provides challenge after all high-level content has been cleared. It's so much fun because it is not intended by the game designers that you do those things alone. In this case I suspected that it's probably not possible to solo any boss in the instance, however there are several game mechanics that work differently when there is only one player on the mobs aggro-table. To find out whether that's the case in Hyjal you just have to try to do it, that's what this movie is about. If you're not interested in that kind of stuff just don't watch it.
I apologize to anyone who is offended by the fact that the title of the movie *might* suspect that something different is happening. I chose the title based on a previous movie I made two years ago about soloing Onyxia back in BC, not to trick you into watching something you are not interested in.
There are also some bonus solo-fights at the end of the movie, since there is not much left to do in the game at the moment I started to do all hero instances solo. Some of the fights are included.