edit(KP)
I'm posting this in case we may actually have a glitch here. Myself, and many others, were unable to collect a Glimmerbat after multiple adventures to the Ancient Vault. I completed 6 adventures myself, a 7th is underway, but will not complete before this quest expires.
Some users hit the bat on their 1st or 2nd tries, and based on the drop rates for the needed rocks, it would seem that the bats should have been relatively easy to get after completing all of the other challenges, better than 50/50 odds, I would have hoped?
Could myself and these other unlucky individuals be the victims of some game glitch, similar to the others we have seen posted about? Did the game think we had already collected our bat, and is therefore refusing to give us another? This matches the pattern we have seen for other quests where a needed item cannot be obtained because the game things we have already received ours?
Please investigate this as a BUG.