I joined this site just to post this link. There is a EU guild by the name of LdN Unplugged on Eredar. Their guild leader, Joolanda managed to finish out the remaining pet battles needed to finish out all the currently possible achievements. It was hard to find this player/guild as only his alt on a different server pops up, Cetus. Anyhow, Joolanda narrowly beats out about 6 other EU/US players that are all with 3 achievements of the same thing. Joolanda has "only" 80 Feats, but did manage the 1975/1976 first. Congrats to Joolanda!
Can someone else please link that player's armory, as I have too few posts to do so.
Sorry to necro this thread by over 3 months, but a player has just gotten all the achievements currently possible in-game. I figured it was going to be Joolanda again, whom has been at 27k for the current season and heroic Garrosh away for a couple weeks but there was a late comer who got it first. Lulleh on Stormscale on EU side managed to be the first to 2054/2057, missing only the Christmas holiday 2013 achievement and next season's PVP achievements. I cannot link yet, so if someone would do the honors, that would rock. Congrats to Lulleh!