Useful links:PvE ProgressionTier 22: Uldir (7/8 H; 8/8 N)Taloc
MOTHER
Zek'voz, Herald of N'zoth
Fetid Devourer
Vectis
Zul, Reborn
Mythrax the Unraveler
G'huun
Previous progressionKills after the next tier is released are not included. Kills before Cataclysm aren't included due to laziness. You get to invent your own numbers for Molten Core and Onyxia's Lair (spoilers: we killed her).
Tier 11 (Blackrock Descent & Bastion of Twilight): 12/12 normal, 1/13 heroic
Tier 12 (Firelands): 7/7 normal, 6/7 heroic
Tier 13 (Dragon Soul): 8/8 normal, 7/8 heroic
Tier 14 (Heart of Fear, etc.): 16/16 normal
Tier 15 (Throne of Thunder): 12/12 normal, 2/13 heroic
Tier 16 (Siege of Orgrimmar): 14/14 normal/heroic, 10/14 heroic/mythic
Tier 17 (Highmaul): 7/7 heroic, 3/7 mythic
Tier 17.5 (Blackrock Foundry): 10/10 heroic
Tier 18 (Hellfire Citadel): 13/13 heroic
Tier 19 (Emerald Nightmare & Trial of Valor): 13/13 heroic
Tier 19.5 (The Nighthold): 10/10 heroic
Tier 20 (Tomb of Sargeras): 9/9 heroic
Tier 21 (Antorus, the Burning Throne): 11/11 heroic
OfficersGyrm, the guild master-type-person, or so we have him believe
Eesh
Elestren
Leainne
Sanzara (Sanzul)
Thustra