This was one of the more challenging things I’ve done in awhile, and what fun! After quite a few failed attempts – which usually had me frantically mashing buttons during the final seconds of the 10th wave – I finally managed to down the last Sha with barely a moment to spare. My ilvl 601 gear consisted of a few decent PvP items, a couple dungeon blues, and some quest gear. I used my standard BM build along with a cheap haste potion to get the job done.
After about 8 or 9 attempts that left me feeling a little inadequate, it finally occurred to me that the buffs that spawn during the encounter did not have to be used immediately.
If you’ve yet to attempt or complete this achievement, I’ll say it again…