This post was from a user who has deleted their account.
For guild based I'm most proud of Hand of A'dal and http://www.wowhead.com/achievement=4602. Hand of A'dal the my guild at the time didn't have to do it since we were already doing the content after they removed attunements but not the title. But it was still a great trip and a fun quest line and awesome to have done now that its removed. Glory of the icecrown raider 10 was just as fun and done with on offnights for something to do and to get the mounts. I think that made it even better because it didn't have all the "must progress" pressure of a main guild run but everyone was still expected to perform.For solo or self gained achievements I'm most proud of Frostbitten and http://www.wowhead.com/achievement=1312. Took a while but they were totally fun to do. Camping spots, patrolling spots. Filled a lot of hours in wow that I would have otherwise not had or just been /afk'ing in dalaran to mindlessly watch trade. I just wish they added another for cataclysm so I could have that fun for a third time.
Mine favorite is The exalted. Got it while it was for 40 reputations.
Did Somebody Order a Knuckle Sandwich?Especially when my brother did it on his mage -,-
One of my favourite achievements has to be Arrested Development. The first time I achieved this was a Shaman healer with a group who couldn't interrupt :p It was a lot of fun interrupting Corla while keeping the tank healed and trying to keep my mana up :)
The best achievement I did was the Glory of the Hero. Getting the Red Proto Drake was cool. But the best part of it was my guild mates also took up the challenge to get this achievement. At least 3 guild mates blamed me for 'infecting' them all into getting the achievement. The guild was the Evolution on Saurfang server on the Oceanic realm. I believe about 20 players in the guild raced to get it done. Many of them became mount hunting happy. Hope they kept up the spark to go mount hunting.
I loved getting the Make Love Not Warcraft achievement. It was a luscious victory to be able to hug a dead horde. :)
The achievement I am most proud of is The Frozen Throne (10 Man) because I played Warcraft since the original when I was a kid, and I've played through every expansion and sequel. I always wanted to march to the frozen throne in Northrend, and kill the Lich King. When I started playing WoW I never really joined a guild, then found an amazing one that became a second family for me. They helped me to push myself farther as a player than I ever had before. I never had the confidence to tank, but they taught me how, and the first time we took down the Lich King, I tanked for an absent player. Downing him with the guild was the most amazing feeling I ever felt playing this game, and felt so good after all the hard work we put into the fights.
The achievement I'm most proud of would be Swift Zulian Tiger. I spent countless hours farming it, and when it finally dropped, I was overjoyed! Not only is it my favorite mount in the game, but since it's no longer obtainable it makes owning one even more precious. :)
I am proud of my Shop Smart, Shop Pet... Smart achievement. Yeah, my little pet army :D , currently 56, which is growing all time to the 125 companion pets achievement. I wish to have at least two companion pets with me at same time.
Finishing Hero of the Zandalar Tribe just a few hours before the raid was removed. As a new player from WotLK I never had a chance to see old content at level so going back and doing all of that stuff is really fun for me.