First of all, I am mostly using exploit already posted here and some exploits I found myself. Engineering is needed for the first one and mammoth for most of them.
Almost all of these exploits are usefull for any classes especially ranged but being warlock helps since you can teleport as u see in the videos.
I collected most of my favourite spots on the video but I will probably post more later
EDIT: for those who cant be arsed to watch till credits: SPECIAL THANKS TO SHORTY for sharing all the great exploits I used as my advantance!
Link to WCM:
http://warcraftmovies.com/movieview.php?id=163343
Remember to watch it HD