Mine would have to be that I earned on my mage Kolz in s6. It took alot of hard work to get to that point, playing arena up till all hours of the morning. It was a huge accomplishment for me and my 2 best friends to finally get that... and then in s7, we were able to do it again in only 2days, letting us purchase our tier 2 pvp weapons first thing :D
Sergeant Achievement. No no not the current PvP one, I'm talking about the oldschool PvP one. Way back in the days of honor and dishonorable kills. I try to always have this as my title whenever im in battle grounds. I felt so proud of myself when I got this back in the old days before I took a break from WoW. It showed how dedicated you were in the battles against the alliance. Sure its not the highest rank. But it is still one that I wear proudly for the hard work and effort I put in to battle grounds way back when.
This post was from a user who has deleted their account.
I particularly enjoy my Bane of the Fallen King achievement. It took nearly a full month of hard effort from the guild to get it and I was very proud that I got to lead that raid.
This will probably sound sad, but my most rewarding 'Acheivement Unlocked!' moment was The Plagueworks, 10man. The two giant abominations were a roadblock for me for months. Finally downing them both was hugely invigorating.
It's down to 'Loremaster' and 'what a long, strange trip it's been' for me. I think 'Loremaster' would have to be my favorite though.I put it off for a long time, and then I read that lots of the quests would be reset with Cataclysm, which made me scramble in the last few days to finish it up.
Tossup between and Universal Explorer for me.
Hmm I'd have to say the achievement. Obvious reasons of course
I have played my undead shadow priest since before BC and my favourite title is my "Undying" title. It suits my character and indicates that I am in fact an internet zombie.
my acheivement im most proud of is the Insane in the Membrane, it toke so long to get it and not many people have it+ its got a best title
I like the Mountain o' Mounts achievements. You get a free horde mount! :) Gotta be one crazy person to farm all 100 mounts. I'm currently stuck at 90 mounts on my hunter! :(
Getting the raven lord mount and the white hawkstrider on my druid in one day ! But I'm still a little ticked .. For she is my Alt. And I've wanted the Raven lord on my main since it's come out. Been farming the elusive thing for over a year now .. But Raven > hawkstrider n__n !
AFter months of fail groups trying to get For The Horde, I finally spent a couple hours in a WIN group and we took out each leader one at a time with no problems. It was worth it to finally get the achievement after months of failing.