Ok if you dont have any Nightelfs or rogues in this group its pretty much useless so click this link it should help.
http://www.mmowned.com/forums/wow-ex...-you-suck.html
insanity so Hard for People who do low Dps, Dont know how to play, or a healer.
This "bug" will make your Kill/achievement much easier.
This is the simplest thing just Shadowmeld when the adds start attacking you. Not sure if this works with vanish ( I Think it does) or anything else such as mage invisibility, invisibility potions, and similar. I have seen it work with Shadowmeld.This can help groups that are not that good dps,Healing, and tanking to kill him faster for the achievement volazj quick demise.<---Can be fould in the The achevment log under Lich king heroics.
Just throwing this out there im a tank pally we had 2 Dps Warriors 1 Dps Hunter and Are healing druid went boomkin The warriors and hunter were all around 1.9k dps and the druid 3k and we Raped them in 29 sec not even 1 insanity.Tanks just pop some CDs and Your Healer that switched to dps just put some hots on you.If you have a DK have them pop army.This achev is incredibly easy.