I finally got my last Proving Grounds title today, the Proven Defender! It was easily the most challenging of the lot, at least for me. It took me a solid week of about 2 hours a day to really nail it down, along with a lot of tweaking to playstyle, gear, and UI. I think maybe I can actually tank in Warlords of Draenor now!
Despite all the bullshit (wave 9 please go) I suppose I did have fun. At least I don’t have to spend any more time on this!