I've been trying to clear the gold portion of the proving grounds... I'm not sure what it is or because I'm generally not popping army but at around 620ish item level I got to wave 10 and couldn't kill the loss boss, had a couple hundred thousands of HP.
Fast forward to about 630 ilevel and I dropped the last wave boss below 100k before the time expired.
Has anyone had any luck with clearing this in time? I think it's a gimp thing for DKs as the movement capabilities in here limit us because all we have is our speed CD (if you've specced for it) or death grip.
Clearing this as unholy btw, might have not just be on top of my game, will give it another shot today.