Diablo 3 - Super Human Conquest with Witch Doctor (Season 4 Hardcore)
The Super Human conquest in Diablo 3 - clearing Greater Rift 40 without using any class set bonuses on Hardcore mode. The non-hardcore version of this conquest is titled, "The Thrill" - which this build is also applicable to.
Sorry about the low frame rate - I had Fraps set to 10 FPS because I was recording other stuff to review later for myself and forgot to switch it back before I began recording the run.
I did this on a whim, and the Witch Doctor was fairly new - so I didn't have my gems leveled fully up. The Bane of the Trapped I used was still at a very low level (13,) my Enforcer was still level 1 (I don't use it for his normal build) and my Esoteric Alteration was level 25. I'm certain my gear wasn't optimized for this, and I didn't have an ancient Kukri to use. With a bit of optimization, this setless build should be able to take down 40+ with no problem.
Feel free to add my Battletag for any questions - Baalrogg#1987.