Argent Confessor

Some short infos for this achievement:

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• You can do this dungeon once a day
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• It's all about the second boss.
  Either of [npc=34928] or [npc=35119] appear as the second boss. It's random which one appears, you'll need [npc=34928]
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• Don't kill [npc=34928] right away
  Wait until she summons the memory. However you must at least hit her once, but you cannot kill her with just one hit.
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• By resetting the boss, you can re randomize which memory is summoned by [npc=34928] if she's active.
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• By resetting the boss, you cannot re-randomize if [npc=34928] or [npc=35119] appears.
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• Reset the boss by leaving the instance
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• I suggest burning down the first trash unmounted while they only have one shield buff
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You have earned the achievement: [World First: Wipe on Hogger]!

I'm slightly disappointed that Kael'Thas isn't on this list, which undoubtedly means he won't be one of the possible memories. It would have been good to see him come back after that setback in Magister's Terrace, even if it was in memory form.