Surge Protector

you can now solo it by just kill odyn before the mobs respawn

Pretty easy achievement, just make sure you keep interrupts on the add and priority swap to them. Extremely easy to get.

Guide with helpful links:

1. 
   
2. Start the [npc=95676] encounter in [zone=7672] like normal.
3. 
   
4. Some time later, [npc=95676] will begin to cast [spell=201215], which will indeed summon a [npc=102019].
5. 
   
6. Make sure to kill the [npc=102019] as fast as possible while interrupting any cast of [spell=198750]. Any kind of stun seems to work,
   like a [class=4]'s Kidney Shot or a [class=2]'s Hammer of Justice.
7. 
   

I also noticed that you don't have to be alive during this encounter in order to earn the achievement. I died and was sent to the "platform" up above but still got it.