Split Personality

Since it doesn't seem to be mentioned already, this achievement can be earned by simply nuking Telestra before she splits at all. Earned this without realizing I still needed it, while running instances for reputation gains.

During a certain percentage the boss will split into three copies of her with unique abilities, I find the easiest way to complete this achievment is to first get on an integrated voice-chat like Ventrilo to call out when to slay her images, and to bring area of effect dps, such as a mage or a bladestorm warrior, the 5 second timer starts when the first image dies so the best way is to dps each image down to a low %, you probably want to focus on burst damage, not DoT's because they might accidently finish one off. In order to get this achievment you must let her split TWO times and down the adds within 5 seconds of the first one dying

My team had trouble with this achievement due to the Frost add not dying when it had 1 hp. I think it's due to her casting blizzard at the time she wouldn't die till she finished casting it. So don't kill all 3 of em till the frost is done channeling blizzard before you decide to kill all 3 at once.