Came across this article, detailing the gear you will earn in the Vault of Glass raid. Enjoy!
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Edited by JJukeR: 8/30/2014 11:48:03 PMIt called some enemies "minions of the darkness". This means "champions of the darkness" must be mini bosses i.e dragon slayer achievement. The dragon we saw was on Venus, also where the vault of glass is, and the first raid we get. Dragons confirmed!!!