Salt and Pepper (10 player)

Posting from the future, if you one shot the boss you won't get credit for the achievement. Wait a few seconds.

With a merger 5.79 million shared health this achievement is easy, and straight forward.

5790000/180=32,167 raid dps

Assuming tanks do 1.6k each 28,967 non tank raid dps.

On normal mode, if people are switching colors at the right point, 2 healers is very doable (our healers got bored enough to nuke for the sake of having something to do).

So 28967/6=~4830 dps per dps'er. Considering this is doable in naxx 25 gear, at this point in ToC, a good group, this achievement is no problem.

The biggest tip for solid (ranged) dps: If you are killing the dark twin (thus you have the 'light' essence) stand by the dark portal. If you have to switch, you can wait to time it better as opposed to running around. It also makes bursting down the shield a lot easier, as you can switch immediately, if needed in 10 that is.

It's not that hard achievement, the key is to not let them heal. Burn down the shield fast and interrupt. Also the 100% dmg increased from those stacking debuffs is nice and makes it easier. So healers try not to touch em and let ranged dps do that job.