Head Case

First time here you will pick one color to leave alone out of Red, Blue or Green. Say you want to leave Red alone and you just kill Green and Blue heads. That will give you one prong of the achievement.

Next week, you kill for example Red and Blue and you leave Green alone.

The week after, say you kill Red and Green and leave Blue alone.

Just make sure your party knows what color to leave and you'll be fine that week. Three weeks running, and you'll have this under your belt!

Each week, you have to only focus on 2 of the 3 colors and making sure each of the selected color never gets targeted, you'll get this down.

Are you on Heroic? Did you tab in to check how to do this achievement mid-fight? DON'T. TAB BACK IN and kill those Nether Wyrm adds or they'll perma-stun you, you can't get out, have to force-close the game and wait for soft reset.

Easy achievement at Level 110 and beyond, and this will be completed over multiple raids.

1) Start fight.

2) Attack only a single head, do not attack the other head.

3) Single Target Only. No multishots, area of effect, weird buffs that attack others, etc, just single target. Eventually boss will die from single head death.

4) Come back in a week.

5) Again, attack only a single head and leave alive the head that you need for achievement. Eventually boss will die from single head death.

6) Come back in a week.

7) Again, attack only a single head and leave alive the head that you need for achievement. Eventually boss will die from single head death.

8) ?

9) Achievement Complete.