What is the rarest achievement (according to GB) you have gotten as of right now? Or maybe you'd like to tell us what achievement you're most proud of instead.

Mine is the Streak Masters achievement from GH 3. Sore Thumb Award from Boom Boom Rocket is third for me but I'm pretty proud of that one.

If you don't know how to find your rarest achievement, all you need to do is click the achievement tab on your profile page then scroll over to 'sort by achievement' and click 'rarity' on the drop down menu.

Uhh, I dunno, Inhuman Achievement maybe? Maybe Best of the Best in Vegas.

I like my Rock Band/Rock Band 2 achievements. I have Platinum Artist on each and a few other good ones.

I am so envious of the 2 people on this site that has the "superstar" achievement in mirrors edge.

Anyway, apparently my tomb raider legend dlc achievements are super rare, but Im most proud of some of my mirrors edge achievements and the smile achievement of geometry wars 2. The killtacular achievement in halo 3 was pretty cool, and Im also pretty proud of the "complete all 50 episodes" achievement in N+.

Little rocket man in episode two. Ill never forget that goshdarn gnome.....

My most rare is 1,000,000 Online credits in Forza 2, which is a pretty good accomplishment. Sadly most of my rare achievements are not that difficult and are just from games that people don't play. I do have the Taking it for the Team achievement in GTAIV though.

I still don't have my XBL achievements synced to my account yet...but my WoW achievements are!!!  Hopefully, that means my XBL stuff will be up before the end of the day, and I can share what mine is.  = D

My rarest achievement is in dbz burst limit. Finish survival mode. Im one of two people, but I think the rarest achievement in terms of ratio is Auf Wiederstein Petrovich in GTA IV. Four people out of four thousand have this achievement. It is by far the most riduculus achievement ever.

Fly The Co-Op for GTAIV. Those times were insane.

50 Eagles and 25 Holes in One on Tiger Woods PGA Tour 06

mines the famous pinata from viva pinata TiP

Well, I have around 15 "rare" achievements, but the first one on the list is "THIS! IS! ANNEX!" from Gears of War 1.

It was a real bitch to get, I remember, and I was the first one out of my entire GeoW friend community to get it (and those guys were super pissed because they considered themselves "god-like" at that game).

Here's the description: "Complete 100 multiplayer matches of 3+ rounds in Annex and capture 3 objectives in each match"

While not my rarest (though only out-rared by completing the Forest of Death with Sasuke in Naruto: Rise of a Ninja), I'm most proud of my "Survived 1,000,000 Points" achievement in Geometry Wars 1. Damn, that was an intense achievement.

I have the perfectionist achievement in Time Pilot which is shared by me, Jeff, and 8 others. Thats my rarest achievement and its out of about 800 people.

I am lacking in the rare achievement department. I need to get some rare achievements in Rock Band 2 and Left 4 Dead, and then I will be in a better standing. Right now, I have the "Hit 69 bikers with a bat" achievement as the one that pops up first (GTA IV L&D).

Mines some 30 point secret achievement from Star Ocean: The Last Hope.

Mine is Origami Master from Stranglehold.  You get it by finding 250 origami paper cranes hidden in the levels.  Whats weird is that the game will keep adding cranes even if you get the same one twice.  I had about 150 by the time I finished the game so I just kept replaying the first level (which had 12 cranes) until I got the 250.

I wish I knew. My achievements are still #384 in queue.

At least two of my rare achievements (including the rarest, I believe) are from Turok multiplayer.  I'm probably MOST proud of my Hardcore achievement (earn 1,000 kills) in Team Fortress 2 on the Orange Box.

I would mention my 7 rare achievements and how proud of them I am, but fear everyone would than attempt to get them and they would no longer be rare and than neither would I.....be rare. :P

If I could use the achievement system, I would have some rare ones in Rock Band 2.

Apparently my rarest achievement is the Liberty City Minute achievement in Grand Theft Auto IV. That being said, I have earned a few achievements since being back at Uni, but I won't be able to sync them to my LIVE account until the end of June.

Technically my rarest achievement is The Horseman's Reins from WoW, but I'm proud of geting Heroic: The Twilight Zone (also from WoW) before they made it easy.to get.

Aha!  Figured it out :)  Anyway, 

My rarest achievement is "Hero of Nagoya" from Space Invaders Extreme (29 people unlocked so far not counting me) but it hasn't been updated on Giant Bomb yet :/

Hero of Nagoya 25 points

Achieved 1 ROW using the Nagoya Attack technique. 1 comment

Space Invaders Extreme

Seeker 35 points

Explore 200.6% of the game. 0 comments

Castlevania: Symphony of the Night March 31, 2007

Grand Pearl Pooh-Bah from Hexic HD: only 20 people (0.3%) have it!

I have 56 rare achievements and the most rare would probably be one of the Dead Rising ones. Or possibly something Guitar Hero related.

I've got a couple that only a few other people on the site have.  As for my rarest, grand pearl pooh-bah on Hexic takes it, shortly followed by beating Ninja Gaiden 2 on master ninja, pimp killer on Saint's Row (at least I think that's what the secret achievement is), and getting all weapons in Earth Defense Force.  I'm perhaps the most proud of that one since I played that whole game solo (no splitscrean partner)

I was the First one to get this achievement. It's from Culdcept Saga.

Sadly, my rarest concern Marathon 2 XBLA, a game I wish more people played.

	Thing What Kicks 20 points	Kill a Juggernaut in Survival and live to tell the tale. 0 comments	Marathon 2: Durandal June 25, 2008
	Hats off to 819 21 points	The secret of 2401 lies within. 0 comments	Marathon 2: Durandal Dec. 21, 2007
	King Pfhor a Day 10 points	Outscore all the other players (at least 3) combined in a KOTH or KTMWTB game. 0 comments	Marathon 2: Durandal June 19, 2008
	You Think You're Big Time 20 points	Win a multiplayer game with at least 4 players in every map in the Total Carnage Netmap Pack. 0 comments	Marathon 2: Durandal Jan. 3, 2009
	VidMaster 35 points	I give no secrets. 0 comments	Marathon 2: Durandal Dec. 25, 2007

Aperture Science 40 points

Earn gold medals on all Portal challenges. 3 comments

The Orange Box Dec. 12, 2007

Treasure Trove 20 points

Obtain all Treasure Box items in the field. The items you missed may be available at auction houses. 0 comments

Lost Odyssey April 4, 2008

I think my rarest one is a secret one for Marvel: Ultimate Alliance. So yeah... I'm very proud of it, whatever it is.