Hah, ret aura, another little trick I had access to but hadn't thought of! Oh well.

I'm up to 4/5 bronze drakes now. Tonight I was having to run the length of Strat for almost every wave and was sure I wasn't gonna make it. I ended up looting the Corrupter at 4 minutes remaining on the timer. Hm! I've been running Strat right after heroic ToC, so I've (usually) still had flask buffs to work with, probably making a lot of difference. I guess after another ToC upgrade or two, I'll try running both without flasks and see how I do.