Achievement Unlocked Game Visibility Global Unlocks
The Cleaner
Kill the entire enemy team (with at least 5 players) in a single round 		2011-10-15 15:51:34
Counter-Strike: Source 40.8%
Participation Award
Kill an enemy player within 3 seconds of them recovering a dropped bomb 		2011-10-15 15:47:01
Counter-Strike: Source 31.1%
Street Fighter
Kill an enemy player with a knife during the pistol round 		2011-10-15 15:24:55
Counter-Strike: Source 30.4%
Overkill
Kill an opponent you are already dominating 		2011-10-15 15:23:24
Counter-Strike: Source 52.1%
Variety Hour
Get kills with 5 different guns in a round 		2011-10-15 15:19:50
Counter-Strike: Source 37.4%
You've Made Your Points
Inflict 50,000 total points of damage to enemy players 		2011-10-15 15:18:29
Counter-Strike: Source 37.5%
In B4 Reset
2011-10-07 19:08:37
Rising Storm/Red Orchestra 2 Multiplayer 3.6%
Master of Clicking on Stuff
Finish the tutorial. 		2011-09-29 12:08:52
Frozen Synapse 41.2%
True Focus Means Ignoring That Which is Irrelevant
Ignore an enemy. 		2011-09-29 12:08:07
Frozen Synapse 46.1%
If it's hostile, you kill it.
Become a true ranger. 		2011-08-22 19:19:31
Metro 2033
21.9%
Pathoanatomist
Kill 5 amoebas. 		2011-08-22 18:46:24
Metro 2033 23.4%
Heavy Reader
Kill a librarian. 		2011-08-21 13:50:03
Metro 2033 23.5%
Sniper
Make 25 headshots. 		2011-08-21 12:38:52
Metro 2033 14.0%
DJ Artyom
On the level 'Outpost' reach the radio tower and broadcast the commander's message. 		2011-08-20 16:58:36
Metro 2033 11.2%
Fire in the hole
Kill 20 lurkers. 		2011-08-20 16:41:39
Metro 2033 25.5%
Gunman
Kill 50 enemies with heavy automatic shotgun. 		2011-08-20 16:41:26
Metro 2033 11.1%
Tank Buster
Destroy fascists' Panzer. 		2011-08-20 15:15:09
Metro 2033 30.3%
Fugitive
Complete level 'Armory' without getting caught. 		2011-08-20 14:44:03
Metro 2033 24.1%
Demolitionist
Blow up the tunnel and airlock at 'Cursed' station. 		2011-08-20 14:38:31
Metro 2033 34.4%
Nosalis hunter
Kill 30 nosalises. 		2011-08-20 14:35:39
Metro 2033 40.2%
Exorcist
Complete levels 'Ghosts' and 'Anomaly' without dying. 		2011-08-20 08:29:50
Metro 2033 26.7%
First blood
What doesn't kill you, makes you stronger. 		2011-08-18 21:23:10
Metro 2033 82.0%
Primer
Do at least 95% damage to an enemy who is then killed by a another player 		2011-07-10 09:57:03
Counter-Strike: Source 53.8%
Head Shred Redemption
Kill 5 enemy players with headshots in a single round 		2011-07-10 09:53:51
Counter-Strike: Source 46.5%
The Unstoppable Force
Kill 10 enemy players in a single round 		2011-07-10 09:52:45
Counter-Strike: Source 45.3%
Kill One, Get One Spree
Kill an enemy player who is on a killing spree 		2011-07-10 09:49:58
Counter-Strike: Source 44.5%
The Immovable Object
Kill an enemy player who has just killed 10 of your teammates in a single round 		2011-07-10 09:49:58
Counter-Strike: Source 47.7%
Pro-moted
Win 200 rounds 		2011-07-09 13:51:22
Counter-Strike: Source 30.5%
Shrapnelproof
Take 80 points of damage from enemy grenades and still survive the round 		2011-07-09 13:23:11
Counter-Strike: Source 35.9%
Happy Camper
Get two kills standing in the same spot with a zoomed sniper rifle. 		2011-07-08 09:57:01
Counter-Strike: Source 32.5%
Eye to Eye
Kill a zoomed-in enemy sniper with a sniper rifle of your own 		2011-07-08 09:54:51
Counter-Strike: Source 50.4%
Completed!
Complete the entire game 		2011-07-06 08:16:32
Trine 30.7%
Summer Dip
Stay underwater for more than 20 seconds without taking damage 		2011-07-05 08:44:20
Trine 30.1%
Astral Introduction
Complete Astral Academy 		2011-07-05 07:47:47
Trine 84.3%
Killed 1 enemy (TEST)
Killed 1 enemy (TEST) 		2011-07-04 06:33:46
The Polynomial 66.0%
Backdraft Dodger
Kill a Pyro who has airblasted one of your rockets in the last 10 seconds. 		2011-07-02 13:10:04
Team Fortress 2 16.4%
Escape the Heat
Jump into a pool of refreshing water while on fire. 		2011-07-02 13:04:39
Team Fortress 2 22.9%
Doc Holiday
Have a dispenser heal 3 teammates at the same time. 		2011-07-02 09:49:56
Team Fortress 2 26.4%
BIT.TRIPPER
Register a high score on the leaderboards 		2011-07-01 08:04:22
BIT.TRIP BEAT 55.8%
TRANSITION.COMPLETE
Beat Transition in Normal difficulty 		2011-07-01 08:04:21
BIT.TRIP BEAT 45.8%
JUGGLER
Chained 100 Beats 		2011-07-01 07:52:13
BIT.TRIP BEAT 51.1%
SUN.BATHING
Got a PERFECT in sunny 1-1 		2011-07-01 07:51:46
BIT.TRIP BEAT 38.7%
Triple Steal
Capture the enemy intelligence 3 times in a single CTF round. 		2011-06-27 14:41:33
Team Fortress 2 12.7%
For the Record
Complete the Single Player campaign on any difficulty. 		2011-06-21 15:00:40
Call of Duty: Modern Warfare 2 (2009) 48.5%
Out of the Frying Pan…
Complete the mission in the airplane graveyard. 		2011-06-21 14:37:57
Call of Duty: Modern Warfare 2 (2009) 43.2%
Some Like it Hot
Kill 6 enemies in a row using a thermal weapon in Single Player or Special Ops. 		2011-06-21 14:36:21
Call of Duty: Modern Warfare 2 (2009) 56.5%
The Pawn
Assault Makarov's safe house. 		2011-06-21 14:29:52
Call of Duty: Modern Warfare 2 (2009) 41.7%
Whiskey Hotel
Take back Whiskey Hotel. 		2011-06-21 14:10:25
Call of Duty: Modern Warfare 2 (2009) 44.4%
Desperate Times
Execute the plan to help the Americans. 		2011-06-21 09:48:11
Call of Duty: Modern Warfare 2 (2009) 45.6%
Soap on a Rope
Storm the gulag. 		2011-06-20 19:24:25
Call of Duty: Modern Warfare 2 (2009) 49.2%
Unnecessary Roughness
Use a riot shield to beat down an enemy in Single Player or Special Ops. 		2011-06-20 19:16:50
Call of Duty: Modern Warfare 2 (2009) 46.1%
Knock-knock
Kill 4 enemies with 4 shots during a slow-mo breach in Single Player or Special Ops. 		2011-06-20 19:08:14
Call of Duty: Modern Warfare 2 (2009) 27.7%
Royale with Cheese
Defend Burger Town. 		2011-06-20 16:12:12
Call of Duty: Modern Warfare 2 (2009) 58.5%
Ten plus foot-mobiles
Kill at least 10 enemies with one Predator missile in Single Player or Special Ops. 		2011-06-20 16:04:46
Call of Duty: Modern Warfare 2 (2009) 60.9%
Tag 'em and bag 'em
Find Rojas in the Favelas. 		2011-06-19 11:45:46
Call of Duty: Modern Warfare 2 (2009) 56.3%
No Rest For the Wary
Knife an enemy without him ever knowing you were there in Single Player or Special Ops. 		2011-06-18 09:55:16
Call of Duty: Modern Warfare 2 (2009) 35.9%
Solved World 3
Fit together all the world 3 puzzle pieces and align the puzzle in its frame. 		2011-02-12 08:26:00
Braid 43.7%
Traversed World 3
Travel all the way across World 3. 		2011-02-12 08:25:39
Braid 61.3%
Solved World 2
Fit together all the world 2 puzzle pieces and align the puzzle in its frame. 		2011-02-11 17:22:29
Braid 54.6%
Traversed World 2
Travel all the way across World 2. 		2011-02-11 16:27:29
Braid 87.9%
The First Step
Level up 		2010-12-15 10:24:14
Beat Hazard 80.7%
Granule Extractor
Complete World 3 in Story Mode. 		2010-12-13 18:54:31
Shatter 42.6%
Aurora
Complete World 2 in Story Mode. 		2010-12-13 18:41:26
Shatter 54.4%
CRASS MENAGERIE
Kill one of each Uncommon Infected. 		2010-12-13 18:07:43
Left 4 Dead 2 39.3%
ACID REFLEX
Kill a Spitter before she is able to spit. 		2010-12-13 17:59:27
Left 4 Dead 2 66.7%
Kinetic Harvest
Complete World 1 in Story Mode. 		2010-12-13 11:52:57
Shatter 75.7%
Storm Warning
Trigger a Shard Storm. 		2010-12-13 11:51:23
Shatter 70.4%
Balls Galore
Launch multiple balls into play. 		2010-12-13 11:50:15
Shatter 60.3%
Shardenfreude
Collect 75% of all fragments on any wave. 		2010-12-12 18:36:33
Shatter
86.6%
Off-The-Wall
Collect 5 Droplitz with no path 		2010-12-11 12:26:09
Droplitz 50.0%
Easy Street
Create 40 paths 		2010-12-11 12:19:47
Droplitz 66.7%
Full House
Use all Droppers and Collectors 		2010-12-11 12:17:44
Droplitz 61.2%
Quick Off the Blocks
Create a quad before the beatline has made its first pass of the level. 		2010-12-09 11:23:17
Chime 89.3%
Special Item: The Heavy
Knock out The Heavy after he's bought in with his special item. 		2010-12-07 11:17:43
Poker Night at the Inventory 63.5%
Kicker Trouble
Win a showdown where you and the opponent have same hand (pair or better) and you have a better kicker. 		2010-12-07 11:04:58
Poker Night at the Inventory 78.3%
Full House
Win a hand with a Full House. 		2010-12-07 11:00:54
Poker Night at the Inventory 69.9%
Flush
Win a hand with a Flush. 		2010-12-07 10:13:46
Poker Night at the Inventory 71.1%
Slow Play
Check a pat hand. 		2010-12-07 10:12:43
Poker Night at the Inventory 56.7%
Straight
Win a hand with a Straight. 		2010-12-07 10:09:23
Poker Night at the Inventory 77.6%
Win A Game
Win a full game. 		2010-12-07 10:04:08
Poker Night at the Inventory 80.0%
Triple Through
Win a pot with two or more opponents when you are all in. 		2010-12-07 09:49:38
Poker Night at the Inventory 70.1%
Rags to Riches
Win a showdown with just a high card. 		2010-12-07 09:49:37
Poker Night at the Inventory 56.8%
The Musician
Find 6 different quad sounds on a level. Quads can be square, wide or tall, and either small or big. 		2010-12-07 08:38:28
Chime 66.9%
The Juggler
Have 3 active quads onscreen at once. 		2010-12-07 08:26:24
Chime 80.3%
Fairy Godmother
You get this just because you're such a nice person. 		2010-12-07 08:17:34
Chime 98.0%
Quigley
Score a long range headshot. 		2010-12-01 11:39:14
Lead and Gold - Gangs of the Wild West 15.3%
Rookie Streak
Earn a 20 Note Streak in a game 		2010-11-30 11:21:52
Rhythm Zone 79.3%
EPIC.FAIL
Miss a Beat with an extended Paddle 		2010-11-28 16:01:55
BIT.TRIP BEAT 67.8%
OLD.SCHOOL.SKILLS
Escaped Nether Mode 		2010-11-28 15:58:25
BIT.TRIP BEAT 77.3%
Stainless
Earn Clean Finish and Gold 3 times in a row. 		2010-11-28 13:42:20
Audiosurf 27.1%
PPM 30,000
30000 points per minute. 3 minute minimum. 		2010-11-28 13:27:32
Audiosurf 31.1%
Olympian
Earn triple a gold medal requirement. 2 min minimum. 		2010-11-28 08:18:17
Audiosurf 68.5%
PPM 10,000
10000 points per minute. 3 minute minimum. 		2010-11-28 08:18:17
Audiosurf 76.7%
Royal Ride
Earn Gold without overfilling. 2 min minimum. 		2010-11-28 08:18:17
Audiosurf 80.3%
Chaos Generator
Have all 3 generators running at once in "The Sacrifice" finale. 		2010-10-09 08:33:07
Left 4 Dead 4.2%
BURN THE WITCH
Light a Witch with a Molotov. 		2010-10-09 08:07:04
Left 4 Dead 34.1%
BACK IN THE SADDLE
As the Jockey, ride the Survivors twice in a single life. 		2010-10-08 19:45:21
Left 4 Dead 2 15.1%
MIDNIGHT RIDER
Survive the Dark Carnival campaign. 		2010-10-08 14:47:00
Left 4 Dead 2 27.1%
ARMORY OF ONE
Deploy an ammo upgrade and have your team use it. 		2010-10-08 14:21:35
Left 4 Dead 2 51.6%
A RIDE DENIED
Kill a Jockey within 2 seconds of it jumping on a Survivor. 		2010-10-08 13:55:57
Left 4 Dead 2 65.1%
PRICE CHOPPER
Survive the Dead Center campaign. 		2010-10-08 13:46:46
Left 4 Dead 2 40.0%
Play Multiplayer
Play multiplayer at least once 		2010-10-02 14:24:10
Garry's Mod 86.6%
Warlord
Win 100 rounds 		2010-09-01 07:40:46
Day of Defeat: Source 8.1%
A doc on holiday
Revive a gangmate. 		2010-07-23 07:40:43
Lead and Gold - Gangs of the Wild West 35.6%
First Blood
Kill an enemy. 		2010-07-23 07:36:14
Lead and Gold - Gangs of the Wild West 73.0%
Medical Intervention
Save a falling teammate from dying on impact. 		2010-07-02 07:54:04
Team Fortress 2 10.1%
Surgical Prep
Have an ÜberCharge ready before the Setup phase ends. 		2010-07-02 07:52:27
Team Fortress 2 20.2%
War Crime Spybunal
Kill a Spy who just backstabbed a teammate. 		2010-07-02 07:49:16
Team Fortress 2 18.5%
Make the Cut
Win a knife fight 		2010-07-01 15:03:20
Counter-Strike: Source 37.6%
Premature Burial
Kill an enemy with a grenade after you've died 		2010-07-01 14:54:47
Counter-Strike: Source 29.1%
Rite of First Defusal
Win a round by defusing a bomb 		2010-06-29 19:35:24
Counter-Strike: Source 36.8%
Bunny Hunt
Kill an airborne enemy 		2010-06-29 14:40:05
Counter-Strike: Source 37.7%
Counter-Counter-Terrorist
Kill a CT while he is defusing the bomb 		2010-06-26 10:18:20
Counter-Strike: Source 23.4%
Insurgent
Kill an enemy player that is dominating you 		2010-06-25 14:13:00
Counter-Strike: Source 53.2%
Safety First
Survive a shot to the head because you had the good sense to wear a helmet 		2010-06-25 14:12:30
Counter-Strike: Source 46.7%
Magic Bullet
Kill an enemy with the last bullet in your magazine (excluding sniper rifles) 		2010-06-24 23:24:58
Counter-Strike: Source 53.0%
Freed With Speed
Rescue all hostages within 90 seconds 		2010-06-24 23:23:52
Counter-Strike: Source 11.7%
Good Shepherd
Rescue all hostages in a single round 		2010-06-24 23:23:52
Counter-Strike: Source 16.7%
Piece Initiative
Win 5 Pistol Rounds 		2010-06-24 23:20:10
Counter-Strike: Source 33.1%
Repeat Offender
Dominate an enemy player 		2010-06-24 18:44:58
Counter-Strike: Source 56.9%
Finishing Schooled
Kill an enemy player who has been reduced to less than 5% health by other players 		2010-06-24 14:12:04
Counter-Strike: Source 55.4%
War of Attrition
Be the last player alive in a round (with at least 5 players on your team) 		2010-06-24 11:02:36
Counter-Strike: Source 34.6%
Dead Shepherd
Kill an enemy player who is leading the hostages without injuring any hostages 		2010-06-24 11:00:11
Counter-Strike: Source 17.4%
Blind Fury
Kill an enemy player while you are blinded from a flashbang 		2010-06-24 10:55:18
Counter-Strike: Source 44.3%
War Bonds
Earn $125,000 total cash 		2010-06-24 10:49:39
Counter-Strike: Source 58.6%
Body Bagger
Kill 25 enemies 		2010-06-24 10:40:27
Counter-Strike: Source 59.8%
Avenging Angel
Kill an enemy player in the same round as they kill a player on your friends list 		2010-06-24 10:31:30
Counter-Strike: Source 36.0%
Someone Set Up Us The Bomb
Win a round by planting a bomb 		2010-06-24 10:23:57
Counter-Strike: Source 38.5%
Blitzkrieg
Win a round in less than 30 seconds (against at least 5 enemy players) 		2010-06-24 06:39:46
Counter-Strike: Source 44.0%
Mercy Rule
Kill the entire opposing team without any members of your team dying 		2010-06-24 06:37:40
Counter-Strike: Source 45.3%
Points in Your Favor
Inflict 2,500 total points of damage to enemy players 		2010-06-24 06:37:02
Counter-Strike: Source 62.7%
Newb World Order
Win 10 rounds 		2010-06-24 06:14:27
Counter-Strike: Source 61.0%
Shot With Their Pants Down
Kill an enemy player while they are reloading 		2010-06-24 06:08:52
Counter-Strike: Source 62.4%
Race for the Pennant
Run 25 kilometers. 		2010-06-20 11:44:53
Team Fortress 2 51.4%
Fratricide
Do whatever it takes to survive. 		2010-05-14 08:39:05
Portal 63.8%
Clean Sweep
Win Dod_Colmar without the other team detonating any bombs on your objectives 		2010-04-24 18:25:06
Day of Defeat: Source 10.4%
War Crime and Punishment
In a single life, kill 3 enemies who have damaged a Medic that is healing you. 		2010-04-24 11:32:22
Team Fortress 2 22.2%
On the Warpath
Score 100 Flag Captures 		2010-04-24 09:19:13
Day of Defeat: Source 11.6%
AWOL
Play on 5 non-official Day of Defeat Source maps 		2010-04-21 18:44:03
Day of Defeat: Source 24.2%
Caber Toss
Bounce an enemy into the air and kill them before they land. 		2009-12-24 09:16:48
Team Fortress 2 27.1%
Wings of Glory
Kill an enemy soldier while both you and the target are airborne. 		2009-12-19 07:55:45
Team Fortress 2 20.0%
De-sentry-lized
Destroy 3 Engineer sentry guns. 		2009-11-21 13:08:46
Team Fortress 2 18.1%
It Goes to Eleven
Earn at least 1 star in 11 different Special Op missions. 		2009-11-12 18:00:59
Call of Duty: Modern Warfare 2 (2009) 24.1%
Specialist
Earn 30 stars in Special Ops. 		2009-11-12 17:50:42
Call of Duty: Modern Warfare 2 (2009) 17.4%
Operative
Earn all 3 stars in at least 10 different Special Op missions. 		2009-11-12 17:20:34
Call of Duty: Modern Warfare 2 (2009) 14.4%
Blackjack
Earn 21 stars in Special Ops. 		2009-11-12 17:20:34
Call of Duty: Modern Warfare 2 (2009) 22.8%
The Harder They Fall
Kill 2 rappelling enemies in a row before they land on their feet in Single Player or Special Ops. 		2009-11-12 14:21:35
Call of Duty: Modern Warfare 2 (2009) 49.8%
Operational Asset
Earn all 3 stars in at least 5 different Special Op missions. 		2009-11-12 14:12:13
Call of Duty: Modern Warfare 2 (2009) 19.7%
Charlie On Our Six
Earn 8 stars in Special Ops. 		2009-11-12 13:58:45
Call of Duty: Modern Warfare 2 (2009) 38.0%
Three-some
Kill at least 3 enemies with a single shot from a grenade launcher in Single Player or Special Ops. 		2009-11-11 16:15:49
Call of Duty: Modern Warfare 2 (2009) 66.7%
Two Birds with One Stone
Kill 2 enemies with a single bullet in Single Player or Special Ops. 		2009-11-11 16:15:49
Call of Duty: Modern Warfare 2 (2009) 71.4%
Pit Boss
Run The Pit in 'S.S.D.D.' and finish with a final time under 30 seconds. 		2009-11-11 16:14:07
Call of Duty: Modern Warfare 2 (2009) 8.4%
Black Diamond
Complete 'Cliffhanger' on Veteran Difficulty. 		2009-11-11 16:14:07
Call of Duty: Modern Warfare 2 (2009) 14.2%
First Day of School
Complete 'S.S.D.D.' and 'Team Player' on Veteran Difficulty. 		2009-11-11 16:14:07
Call of Duty: Modern Warfare 2 (2009) 13.0%
Cold Shoulder
Infiltrate the snowy mountain side base. 		2009-11-11 16:14:07
Call of Duty: Modern Warfare 2 (2009) 62.6%
Danger Close
Get hand picked for Shepherd's elite squad. 		2009-11-11 16:14:07
Call of Duty: Modern Warfare 2 (2009) 62.1%
Back in the Saddle
Help train the local militia. 		2009-11-11 16:14:07
Call of Duty: Modern Warfare 2 (2009) 65.7%
Hotel Bravo
Earn 4 stars in Special Ops. 		2009-11-11 15:03:36
Call of Duty: Modern Warfare 2 (2009) 41.4%
Gold Star
Earn 1 star in Special Ops. 		2009-11-11 15:03:36
Call of Duty: Modern Warfare 2 (2009) 54.6%
Ghastly Gibus Grab
Dominate a player wearing any achievement Gibus hat to earn your own Ghostly Gibus. 		2009-11-05 17:02:05
Team Fortress 2 25.4%
Sniper Milestone 2
Achieve 11 of the achievements in the Sniper pack. 		2009-09-06 08:30:05
Team Fortress 2 18.3%
Trust Your Feelings
Get 5 kills with the Sniper Rifle without your scope. 		2009-09-06 08:28:11
Team Fortress 2 15.6%
Enemy at the Gate
Kill an opponent within the first second of a round. 		2009-09-06 08:20:28
Team Fortress 2 18.8%
Dead Reckoning
Kill an enemy with an arrow while you're dead. 		2009-09-06 08:20:28
Team Fortress 2 18.3%
No-Hitter
Steal and then capture the enemy intelligence without firing a shot. 		2009-08-16 11:57:16
Team Fortress 2 17.0%
Shoot the Breeze
Kill a fully invisible Spy in a single hit. 		2009-08-16 08:09:24
Team Fortress 2 20.3%
Dynasty
Win 20 games. 		2009-08-16 07:56:57
Team Fortress 2 20.8%
Weenie Roast
Have 2 enemy Scouts on fire at the same time. 		2009-08-15 18:30:39
Team Fortress 2 22.3%
BarbeQueQ
Cause a dominated player to leave the server. 		2009-08-15 18:23:27
Team Fortress 2 16.5%
You have succeeded!
You have succeeded! 		Unlocked
Quadrant M4 73.1%
You have succeeded!
You have succeeded! 		Unlocked
Quadrant M4 68.9%
Take No Prisoners
In a single life, kill 4 or more players in the victory time after winning a round 		Unlocked
Day of Defeat: Source 5.4%
Don't Bring a Gun
Win a knife fight 		Unlocked
Day of Defeat: Source 19.8%
Beachhead
Capture the final flag to win a round 		Unlocked
Day of Defeat: Source 22.8%
LAST STAND
Complete one round of Survival on The Last Stand. 		Unlocked
Left 4 Dead 14.9%
STAND TALL
Survive a campaign without being incapacitated. 		Unlocked
Left 4 Dead 22.0%
GRIM REAPER
Survive the Blood Harvest campaign. 		Unlocked
Left 4 Dead 22.8%
TOLL COLLECTOR
Survive the Death Toll campaign. 		Unlocked
Left 4 Dead 26.2%
DEAD BARON
Survive the Dead Air campaign. 		Unlocked
Left 4 Dead 26.5%
JUMP SHOT
Headshot a Hunter while he's leaping. 		Unlocked
Left 4 Dead 29.2%
GROUND COVER
Save another Survivor from a Special Infected while on the ground. 		Unlocked
Left 4 Dead 27.2%
MERCY KILLER
Survive the No Mercy campaign. 		Unlocked
Left 4 Dead 35.3%
DEAD STOP
Punch a Hunter as he is pouncing. 		Unlocked
Left 4 Dead 34.0%
WITCH HUNTER
Kill a Witch without any Survivor taking damage from her. 		Unlocked
Left 4 Dead 40.5%
NO-ONE LEFT BEHIND
Beat a campaign with all 4 Survivors. 		Unlocked
Left 4 Dead 42.6%
NO SMOKING SECTION
Kill 10 Smokers as they are pulling helpless Survivors. 		Unlocked
Left 4 Dead 36.7%
HERO CLOSET
Rescue a Survivor trapped in a closet. 		Unlocked
Left 4 Dead 44.0%
HUNTER PUNTER
Shove a Hunter off of a pinned and helpless Survivor. 		Unlocked
Left 4 Dead 41.2%
TOWERING INFERNO
Light a Tank with a Molotov. 		Unlocked
Left 4 Dead 47.7%
MY BODYGUARD
Protect any Survivor from an attacking Infected 50 times. 		Unlocked
Left 4 Dead 42.9%
PYROTECHNICIAN
Blow up 20 Infected in a single explosion. 		Unlocked
Left 4 Dead 51.8%
BLIND LUCK
You or another Survivor take no damage after being vomited on by a Boomer. 		Unlocked
Left 4 Dead 53.9%
TANKBUSTERS
Kill a Tank without it dealing any damage to a Survivor. 		Unlocked
Left 4 Dead 57.6%
BRAIN SALAD
Make 100 headshot kills. 		Unlocked
Left 4 Dead 55.5%
TONGUE TWISTER
Kill a Smoker who has grabbed you with his tongue. 		Unlocked
Left 4 Dead 59.0%
DRAG AND DROP
Rescue a Survivor from a Smoker's tongue before he takes damage. 		Unlocked
Left 4 Dead 64.8%
Insurance Fraud
Kill an enemy while you're being healed by an enemy Medic. 		Unlocked
Team Fortress 2 11.7%
Lightning Offense
Win Well in 5 minutes or less. 		Unlocked
Team Fortress 2 12.9%
Batting the Doctor
Kill a Medic that is ready to deploy an ÜberCharge. 		Unlocked
Team Fortress 2 14.4%
Constructus Interruptus
Kill an Engineer who is working on a sentry gun. 		Unlocked
Team Fortress 2 16.9%
Side Retired
Capture the last point in a CP map. 		Unlocked
Team Fortress 2 17.0%
Bedside Manner
Be healing a teammate as he achieves an achievement of his own. 		Unlocked
Team Fortress 2 18.3%
Identity Theft
Backstab the enemy that you're currently disguised as. 		Unlocked
Team Fortress 2 18.8%
Australian Rules
Dominate an enemy Sniper. 		Unlocked
Team Fortress 2 19.4%
Self-destruct Sequence
Headshot 10 enemy Snipers. 		Unlocked
Team Fortress 2 19.1%
Grey Matter
Get 25 headshots as a Sniper. 		Unlocked
Team Fortress 2 20.2%
Master of Disguise
Trick an opposing Medic into healing you. 		Unlocked
Team Fortress 2 23.4%
Sniper Milestone 1
Achieve 5 of the achievements in the Sniper pack. 		Unlocked
Team Fortress 2 23.3%
Triple Prey
In a single round, get a kill with 3 different weapons. 		Unlocked
Team Fortress 2 23.1%
Socket to Him
Headshot an enemy Demoman. 		Unlocked
Team Fortress 2 25.2%
Be Efficient
Get 3 kills with the Sniper Rifle without missing a shot. 		Unlocked
Team Fortress 2 25.0%
Dead Heat
Kill an enemy in the same second that he kills you. 		Unlocked
Team Fortress 2 26.8%
Second Degree Burn
Kill a burning enemy who was ignited by another Pyro. 		Unlocked
Team Fortress 2 27.0%
Dropped Dead
Kill a Scout in midair with your Sniper Rifle or the Huntsman. 		Unlocked
Team Fortress 2 27.4%
Next of Kindling
Ignite an enemy, and the Medic healing him. 		Unlocked
Team Fortress 2 29.0%
Flamethrower
Set five enemies on fire in 30 seconds. 		Unlocked
Team Fortress 2 29.4%
Nemesis
Get five revenge kills. 		Unlocked
Team Fortress 2 29.2%
Camp Fire
Kill 3 enemies in a row, all within the same area. 		Unlocked
Team Fortress 2 31.6%
Hard to Kill
Get five kills in a row without dying. 		Unlocked
Team Fortress 2 38.0%
Iron Kurtain
Take 1000 points of damage in a single life. 		Unlocked
Team Fortress 2 41.6%
Friendly Fire
Knock down a turret with another turret. 		Unlocked
Portal 49.1%
Lab Rat
Acquire the fully powered Aperture Science Handheld Portal Device. 		Unlocked
Portal 81.4%