Warrior - Problem with Garuda NM

[NovaLevossida]

Just do Butcher's Block combo as many times as needed until enmity is secured and then begin rotations on your other stuff. If there's nothing to stun in the fight (and there's not as far as I remember), throw in Brutal Swing between combo skills for more damage. You won't be facing terrible spike damage in this fight either (dodge slipstream) so firing off Berserk / Internal Release at the start of the fight as well as hitting Infuriate >> Unchained to remove the damage penalty is going to cement aggro on you. I'm not saying do all this in every single fight in the game, but if you're having enmity problems, Garuda's not going to move after that, and you can start working in your Maim combo once enmity is set. No need for Flash. It's weaksauce compared to bashing her face in with an axe.

As an edit here, this is for the beginning of the fight. You should be using abilities intelligently after you solve your enmity problem, but blowing everything at the beginning is going to keep the boss on you if you can't accomplish that otherwise.