Ulduar 10 - Ignis the furnace master

Hey,

me and a couple of friends tried ulduar10 yesterday and it all went fine until ignis.
We couldnt kill the adds even tho they had the 10stacks and were molten when put into the water.
We had a shaman hitting for over 9k single crits and still they wouldnt die?

So my question, is the boss bugged or did we just **** something up?

thanks

This achievement is completed fairly regularly. If it is actually bugged then you're the first person to have come across it.

Shattered achievement is currently bugged, should be fixed soon.

ps. hii Eva o/