List the achivements which make you EXTREMELY PROUD

BF3 - Like A Boss - Roadkill an enemy with a Skid Loader.
Driving something that goes maybe 20km/h through an open airfield with tanks and planes shooting you and squishing an unsuspecting soldier is incredibly satisfying.

Faerie Solitaire - All Grown Up (Collect each pet's adult form).

Payday 2 - Guessing Game
Getting a 100% on E.Y.E Divine Cybermancy is probably my greatest achievement on steam.

Achievements in general are pretty stupid. I don't feel proud of any achievement I've earned. It's just time invested.

Satisfied with however? Feat of Strength achievement for Ashes of A'lar (phoenix mount) in WoW.

War of the Roses: All The Way to Sherwood, with a 210 yard headshot.

For now, Getting all the HL2, RUSH and Mass Effect achievements are my pride, because I really worked for them.

As featured on my profile.

Though clearly I'm under-performing when I look at some of the others.

almost everyone in The Binding of Isaac :D

more specifically?

• Platinum God!: 100% the game
• Basement Boy: Complete the basement without taking damage
• Spelunker Boy: Complete the caves without taking damage
• Dark Boy: Complete the depths without taking damage
• Mamas Boy: Complete the womb without taking damage

also, Killing Floor any of the 'bet map at HoE'

WoW Ones:

The Immortal

Within one raid lockout period, defeat every boss in Naxxramas without allowing any raid member to die during any of the boss encounters in 25-player mode.
Title Reward: The Immortal

Warglaives of Azzinoth

Wielder of a set of Warglaives of Azzinoth.

This

well my 100% completion of binding of Isaac, though to a glitch I don't get the last achievement on steam itself.

HL2, where you hit the cop with the can!

The one achievement that I am very proud of is the Madman from Witcher 2 (complete the game on insane difficulty, where death means your save games are gone).

Expert Excrement Expeditor from Fallout 2.

As far achievements go, I'm only proud of WoW Achievements... Got an Europe First back in TBC and several Server Firsts.

COD:WAW - Finish in Veteran on PS3. That system of having guys always appearing until you advance makes the hardest FPS campaing that i tryed in consoles.

Super Meat Boy: Golden God and The Golden Gift. Here.

Portal: Transmission received

Train Simulator 2013 -
Number One!
(Achieve the number one "Top Ranking" position on any Career System scenario.)

Civilization V - (Had 100% Complete until new DLC was just released)
Richard the Lionheart
(As England, conquer Jerusalem on Emperor or above in the Into the Renaissance scenario)
Surviving Ragnarok
(Win scenario on Deity)

Memoir '44 Online -
Arnhem Victory
(Won Arnhem as Axis)

Warhammer 40,000: Dawn of War II Retribution -
Winter Assault
(Play for a total of 30 minutes against a human opponent on: Ice Station Obelis, Selenon Fissure, or Argent Shelf)

Ys Origin - Grace Under Pressure (Beat Nightmare Time Attack with any character)
Ys: The Oath in Felghana - Hardcore Hero (Beat the game on hard difficulty)
Ys I - Esteria, We Hardly Knew Ye (Earn all the achievements)
Dungeon Hearts - Final Final Boss (beat the final boss on hard difficulty) and Speed Boots (beat the game in under 40 minutes)
Fortix 2 - Impossible is Nothing (get a perfect on every level in impossible difficulty)

Not on Steam:
Lost Odyssey - Treasure Trove (find every little bit of treasure)
Tales of Vesperia - Vesperia Master (unlock all other achievements, basically 100% in a game with a lot of extras)

Real life wife. :D

Left 4 Dead.

NOTHING SPECIAL - Survive a campaign with no Survivors taking damage from Special Infected.

Killed the bots and passed the campaign all by myself, without taking any damage from specials.
Plus... Did it on expert just to make it even more challenging. I have no idea what i had in mind. I had luck.

Does it have to be on Steam?

On Steam: "Oblivion Walker" in Skyrim. It's bugged. Basically, a RNG determines if you will get it at the beginning of the game. If it says no, nothing you do will make it pop. I've done it three times. It's the only one I'm missing.

Not on Steam: "Bladder of Steel Award" on Rockband 2. Play all 84 songs on the game disc on Medium or higher without pausing or failing. It takes 6 hours 20 minutes. Did it on Medium vocals. (See my avatar, haha.) Probably could have done it on Hard, but with Painkiller, Spoonman, and Panic Attack all at the end of that train wreck... maybe if it went hard to easy, but with all the tough stuff at the end, damn right I'm taking the "easy" route.