Strategy

Currently Brutallus has 10,500,000 Health and a 6 minute enrage timer meaning 29,167 DPS is required to beat him before the berserk timer, kills have lasted no more than 6:28, most likely you'll be lucky to live past 6:10.

As it is plainly obvious, Brutallus is a massive (in more than one way) gear check. The strategy to this fight is very simple, make your raid into a "V" shape, with 1 tank at each top end of the V with respective soak groups behind him, and have the melee group at the vertex of the V so that they are always behind brutallus (no parrying). Each soak group takes 3 meteor slashes, the other tank taunts, and that group takes 3 meteor slashes, rinse repeat.

For Burn, that person must leave the group and run to a spot where they won't get slashed but be healed for the debuff, which everyone should be very spread out so that the burned person does not cause burn to happen to other players.

The maximum amount of healers you can bring to this raid is 8 (as 9 healers will almost certainly not get you enough DPS to kill him), and if your healers can do it, bring only 7 healers.

It should be noted that the fight, more specifically Meteor slash, was slightly changed in 2.4.1, that meteor slash's range was 30yrds and is now far longer, most likely to stop an exploit. Because of this, your positioning will have to be a bit more delicate to make sure a burned player isn't in any way in the cone of meteor slash.

The toughest part of this fight is the balance, as in the raid class balance. Warriors (and Rogues) can do extremely high DPS, especially with warglaive sets giving a very big bonus to this demon boss, but too many and you won't have enough soakers. Shadow priests help out a lot with Vampiric Embrace healing their group (the soaker groups), but their DPS is "capped" at 1400-1500 DPS under normal raid circumstances, even with the best gear possible. It will be up to you and your guild to find the best balance for killing Brutallus.

Using destruction potions/haste potions for the DPS is pretty much required, and your melee should have Elixir of Demonslaying over Flasks of Relentless Assault, full raid consumables, including food and buffs (you will need every single buff you can get to increase your healing and damage), even if it includes having a discipline priest waiting outside the instance buffing your casters with imp spirit and that extra paladin for the extra blessing.

Things in this fight you don't have to worry about:

• Parry hasting: Much like the current (post-hotfix) Mother Shahraz, a parried attack will NOT hasten Brutallus's attacks (the reasoning here will be obvious with the massive amount of damage your tanks take)
  
  
• Threat: Because taunting will constantly increase the tank's threat, the only time there is a chance for pulling aggro is before the first meteor slash transition.
  
  
• Crushing blows: Just like the parried attacks, a spike in damage on the tank would just be too much to heal, as such, crushing blows are disabled for Brutallus.
  
  

Damage on the tanks is EXTREMELY high, but continuous and predictable.

A strategy with 3 tanks enables you to avoid his stomp ability, while one with 2 tanks enables you to beat the enrage timer more easily.