Wasn't sure if this was done before, so i decided to upload it.
The fight itself isn't that hard, but it does require some tactics.

On heroic you will get a stacking debuff for each time you move, what this means is that you'll have to stand still for the duration every now and again since at 15+ stacks this really starts to hurt. It doesn't help that you'r bounced around alot because of the bombs and all that fall on the floor ^^ Also when you tank keleseth (when he's active he does around 80k shadowbolts), so make sure that you have a sufficient amount of orbs on you. The easiest way to get those was to have a mouse-over macro with taunt. When keleseth is active while you have stacks that need resetting you can also heal by DS'ing the other 2 princes if you're out of range, berserk is not an issue at all so you might be better off to stick on them since you'll heal more easily because they tend to stay in melee range all the time.
When the other 2 princes are active the fight is pretty simple, but don't forget to keep picking up the orbs.

The kill wasn't as smooth as i wanted it to be , so don't let that be too much of a distraction^^

Enjoy!