Achievement Unlocked Game Visibility Global Unlocks
Clarity
Crack the code. 		2010-11-10 17:21:21
Call of Duty: Black Ops 41.0%
Unconventional Warfare
Use the explosive bolts to kill 30 enemies in the campaign. 		2010-11-10 16:14:17
Call of Duty: Black Ops 24.5%
Mr. Black OP
Enter the Soviet relay station undetected. 		2010-11-10 16:10:05
Call of Duty: Black Ops 13.3%
Never get off the boat
Find the Soviet connection in Laos. 		2010-11-10 15:56:34
Call of Duty: Black Ops 45.0%
Date Night
Watch a film or clip. 		2010-11-09 19:35:56
Call of Duty: Black Ops - Multiplayer 24.6%
Up close and personal
Silently take out 3 VC. 		2010-11-09 19:04:23
Call of Duty: Black Ops 40.5%
Some wounds never heal
Escape the past. 		2010-11-09 18:55:21
Call of Duty: Black Ops 47.0%
Broken English
Escape Kowloon. 		2010-11-09 18:24:34
Call of Duty: Black Ops 48.5%
Sally Likes Blood
Demonstrate killer economic sensibilities by taking down 3 enemies with a single bullet 		2010-11-09 18:24:03
Call of Duty: Black Ops 31.0%
SOG Rules
Retrieve the dossier and the defector from Hue City. 		2010-11-09 18:02:44
Call of Duty: Black Ops 50.3%
The Dragon Within
Kill 10 NVA with Dragon's Breath rounds. 		2010-11-09 17:47:35
Call of Duty: Black Ops 48.3%
Looks don't count
Break the siege in the battle of Khe Sanh. 		2010-11-09 17:44:15
Call of Duty: Black Ops 53.0%
Tough Economy
Use no more than 6 TOW guided missiles to destroy the tanks in the defense of Khe Sanh. 		2010-11-09 17:43:53
Call of Duty: Black Ops 9.7%
A safer place
Sabotage the Soviet space program. 		2010-11-09 17:20:51
Call of Duty: Black Ops 57.2%
VIP
Receive orders from Lancer. 		2010-11-09 16:55:58
Call of Duty: Black Ops 60.8%
Give me liberty, or give me death
Escape Vorkuta. 		2010-11-09 16:45:49
Call of Duty: Black Ops 61.8%
Vehicular Slaughter
Destroy all enemies on vehicles during the prison break. 		2010-11-09 16:45:15
Call of Duty: Black Ops 36.5%
Sacrifice
Ensure your squad escapes safely from Cuba. 		2010-11-09 16:24:16
Call of Duty: Black Ops 67.0%
Death to Dictators
Take down Castro with a headshot. 		2010-11-09 16:18:17
Call of Duty: Black Ops 64.0%
Professional
Earn all 3 stars in at least 15 different Special Op missions. 		2010-11-08 19:33:15
Call of Duty: Modern Warfare 2 (2009) 9.0%
Operative
Earn all 3 stars in at least 10 different Special Op missions. 		2010-11-08 18:37:33
Call of Duty: Modern Warfare 2 (2009) 14.4%
Operational Asset
Earn all 3 stars in at least 5 different Special Op missions. 		2010-11-07 17:17:40
Call of Duty: Modern Warfare 2 (2009) 19.7%
For the Record
Complete the Single Player campaign on any difficulty. 		2010-11-07 15:22:37
Call of Duty: Modern Warfare 2 (2009) 48.5%
Drive By
Kill 20 enemies in a row while driving a vehicle in Single Player or Special Ops. 		2010-11-07 15:15:14
Call of Duty: Modern Warfare 2 (2009) 18.0%
Out of the Frying Pan…
Complete the mission in the airplane graveyard. 		2010-11-07 15:00:25
Call of Duty: Modern Warfare 2 (2009) 43.2%
The Pawn
Assault Makarov's safe house. 		2010-11-07 14:54:01
Call of Duty: Modern Warfare 2 (2009) 41.7%
Whiskey Hotel
Take back Whiskey Hotel. 		2010-11-07 13:24:56
Call of Duty: Modern Warfare 2 (2009) 44.3%
Desperate Times
Execute the plan to help the Americans. 		2010-11-07 13:02:40
Call of Duty: Modern Warfare 2 (2009) 45.6%
Soap on a Rope
Storm the gulag. 		2010-11-07 12:21:00
Call of Duty: Modern Warfare 2 (2009) 49.1%
Knock-knock
Kill 4 enemies with 4 shots during a slow-mo breach in Single Player or Special Ops. 		2010-11-07 11:54:12
Call of Duty: Modern Warfare 2 (2009) 27.7%
Colonel Sanderson
Kill 7 chickens in under 10 seconds in 'The Hornet's Nest'. 		2010-11-07 10:56:00
Call of Duty: Modern Warfare 2 (2009) 10.4%
Royale with Cheese
Defend Burger Town. 		2010-11-07 10:45:14
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. 		2010-11-07 10:40:00
Call of Duty: Modern Warfare 2 (2009) 60.9%
Raccoon King of the Dark Forest
Win a Long Game on Wyre, on Hard Difficulty. 		2010-11-05 21:41:49
Killing Floor 3.7%
Keep Those Sneakers Off the Floor!
Kill 20 Stalkers with Explosives. 		2010-11-05 19:48:48
Killing Floor 15.1%
First Blood
Commit your first murder 		2010-11-01 16:38:16
Bloody Good Time 83.7%
Hot Cross Fun
Kill 25 Burning Specimens with a Crossbow. 		2010-10-30 21:38:42
Killing Floor 6.4%
Thin-Ice Pirouette
Complete 10 Waves when the Rest of your Team has Died. 		2010-10-16 21:12:05
Killing Floor 9.2%
I Like To Watch
Aquire 5 Minutes of "Zed-Time". 		2010-10-14 14:06:59
Killing Floor 26.4%
Merry Men
Kill the Patriarch when everyone is ONLY using Crossbows. 		2010-10-13 17:45:51
Killing Floor 5.2%
It's What's Inside That Counts
Turn 500 Specimens into Giblets. 		2010-10-11 18:09:36
Killing Floor 14.0%
Eviction Notice
Kill a deployed sniper or machinegunner from a distance greater than 100 feet with a rocket 		2010-09-08 17:14:43
Day of Defeat: Source 11.2%
Trophy Collector
Score 5 or more kills in a single life using scavenged enemy weapons 		2010-09-07 14:11:05
Day of Defeat: Source 11.8%
AWOL
Play on 5 non-official Day of Defeat Source maps 		2010-09-03 15:59:17
Day of Defeat: Source 24.2%
Beachhead
Capture the final flag to win a round 		2010-08-31 14:00:48
Day of Defeat: Source 22.8%
Double Happiness
Kill 6 enemies in a row with a shotgun - all of them as one shot kills. 		2010-08-28 08:00:10
Kane & Lynch 2: Dog Days 37.8%
Chinese Waltz
Kill 5 enemies without losing your human shield. 		2010-08-28 07:58:32
Kane & Lynch 2: Dog Days 6.0%
Trigger Happy
Kill 5 enemies in 15 seconds with any pistol. 		2010-08-25 17:31:16
Kane & Lynch 2: Dog Days 22.3%
Blackjack and Hookers!
Accumulate $25,000,000 in your career (Arcade Mode and Multiplayer Ranked Match). 		2010-08-22 10:31:40
Kane & Lynch 2: Dog Days 4.5%
The Cleaner
Escape as a traitor with 50% of any level’s total loot in either Arcade Mode or Multiplayer Ranked Match. 		2010-08-22 01:53:06
Kane & Lynch 2: Dog Days 7.8%
D.I.Y.
Escape with more than $2,500,000 in a round of either Arcade Mode or Multiplayer Ranked Match. 		2010-08-22 01:53:06
Kane & Lynch 2: Dog Days 7.8%
Escape from ...Anywhere
Successfully escape 25 times in Arcade Mode or in any Multiplayer Ranked Match. 		2010-08-22 01:39:21
Kane & Lynch 2: Dog Days 4.3%
Hand of God
Complete a Story Mode mission without dying once on any difficulty 		2010-08-22 01:11:59
Kane & Lynch 2: Dog Days 52.4%
Doing Good
Successfully reach round 5 in Arcade Mode. 		2010-08-22 00:28:32
Kane & Lynch 2: Dog Days 8.2%
Unfinished Business
Kill a yellow carded criminal whilst Down Not Dead (Arcade Mode and Multiplayer Ranked Match). 		2010-08-21 21:40:52
Kane & Lynch 2: Dog Days 3.2%
Welcome
Successfully escape once in Arcade Mode or in any Multiplayer Ranked Match. 		2010-08-21 21:38:21
Kane & Lynch 2: Dog Days 20.3%
Close Encounters
Kill 20 Swarm with melee attacks in a single mission. 		2010-08-21 21:02:42
Alien Swarm 32.7%
Steady Hand
Get 5 headshots in a row using the same clip. 		2010-08-20 15:20:42
Kane & Lynch 2: Dog Days 38.8%
Lost Love
Complete 'A Thousand Cuts' on any difficulty. 		2010-08-20 15:05:47
Kane & Lynch 2: Dog Days 38.3%
Baby be Safe
Complete 'Coming Home' on any difficulty. 		2010-08-20 14:31:55
Kane & Lynch 2: Dog Days 40.1%
Nowhere to Hide
Complete 'Laying Low' on any difficulty. 		2010-08-20 14:12:02
Kane & Lynch 2: Dog Days 43.3%
Sichuan Specialist
Escape the restaurant in 'Laying Low' without being downed on any difficulty. 		2010-08-19 18:41:31
Kane & Lynch 2: Dog Days 22.3%
Death Sentence
Complete 'Blood, Sweat and Tears' on any difficulty. 		2010-08-19 18:32:58
Kane & Lynch 2: Dog Days 48.3%
Street War
Complete 'The Details' on any difficulty. 		2010-08-19 18:11:06
Kane & Lynch 2: Dog Days 56.3%
Can It!
Kill 10 enemies with exploding canisters. 		2010-08-19 18:09:39
Kane & Lynch 2: Dog Days 45.8%
Got Your Back
Revive your Co-op partner 10 times. 		2010-08-19 17:59:33
Kane & Lynch 2: Dog Days 9.0%
A Little Help From a Friend
Complete 1 mission in Co-op. 		2010-08-19 17:38:44
Kane & Lynch 2: Dog Days 25.5%
Welcome to Shanghai
Complete 'Welcome to Shanghai' on any difficulty. 		2010-08-19 17:38:44
Kane & Lynch 2: Dog Days 78.2%
Smoking Barrels
Kill 5 Swarm with explosive barrels in a single mission. 		2010-08-03 17:07:21
Alien Swarm 27.5%
Armory Access
Unlock all the available weapons. 		2010-07-27 16:15:08
Alien Swarm 22.0%
Short Controlled Bursts
Complete a mission with no friendly fire incidents. Four marines must be present in the mission. 		2010-07-27 16:14:57
Alien Swarm 21.1%
Vindicator Veteran
Kill 250 Swarm with a Vindicator. 		2010-07-27 15:45:40
Alien Swarm 20.6%
Scrambled Eggs
Destroy all Swarm Eggs in a mission without allowing any to hatch. 		2010-07-27 15:31:04
Alien Swarm 27.5%
Small Arms Specialist
Kill 250 Swarm with PDWs. 		2010-07-24 14:07:55
Alien Swarm 18.8%
Pyrotechnician
Kill 250 Swarm with a Flamethrower. 		2010-07-24 13:48:43
Alien Swarm 23.7%
Infestation Savior
Cure an Infested marine. 		2010-07-24 13:41:32
Alien Swarm 29.8%
Bug Stomper
Kill 100 Swarm Grubs. 		2010-07-24 13:41:11
Alien Swarm 20.0%
Stay Frosty
Freeze 6 Swarm with a single Freeze Grenade. 		2010-07-23 18:15:10
Alien Swarm 20.2%
Normal Campaign
Complete the Jacob's Rest campaign on Normal difficulty or harder. 		2010-07-22 16:55:21
Alien Swarm 26.2%
Easy Campaign
Complete the Jacob's Rest campaign on Easy difficulty or harder. 		2010-07-22 16:55:21
Alien Swarm 29.9%
Seal of Quality
Seal a door with the welder. 		2010-07-22 16:45:39
Alien Swarm 39.1%
On the Ready Line
Kill 1,000 Swarm. 		2010-07-22 16:23:48
Alien Swarm 32.3%
Autogun Expert
Kill 250 Swarm with an Autogun. 		2010-07-22 15:51:40
Alien Swarm 26.0%
Sharpshooter
Complete a mission with better than 90% accuracy. 		2010-07-22 15:28:04
Alien Swarm 33.1%
Electro-Stunned
Stun 6 Swarm with a single Stun Grenade. 		2010-07-22 15:13:42
Alien Swarm 23.2%
Gunslinger
Successfully perform 5 fast reloads in a row. 		2010-07-21 17:45:06
Alien Swarm 23.9%
Under the Gun
Roll under a Swarm Ranger projectile. 		2010-07-21 17:20:20
Alien Swarm 35.8%
Quick and Dead
Kill a Swarm Boomer before it inflates. 		2010-07-21 17:16:01
Alien Swarm 48.0%
Shield Down
Deliver the finishing blow to a Swarm Shieldbug. 		2010-07-21 17:12:23
Alien Swarm 43.8%
Hat Trick
Complete 2 co-op missions online. Earns a Team Fortress 2 parasite hat. 		2010-07-21 17:04:32
Alien Swarm 55.7%
Damage Amped
Kill 15 Swarm with all four marines under the effects of a Damage Amp in a single mission. 		2010-07-21 17:04:06
Alien Swarm 18.9%
Clear Firing
Kill 25 drones without friendly fire. Four marines must be present in the mission. 		2010-07-21 17:00:32
Alien Swarm 34.8%
Zero Mortality
Complete a mission on Normal difficulty or harder without any marines dying. 		2010-07-21 16:57:33
Alien Swarm 37.1%
Technician Secured
Finish a mission without the tech getting killed. 		2010-07-21 16:57:33
Alien Swarm 56.2%
Protect the Tech
Guard the squad's tech so that he takes no damage during the hack. 		2010-07-21 16:56:58
Alien Swarm 41.7%
Quick Load
Successfully perform a fast reload. 		2010-07-21 16:54:27
Alien Swarm 40.8%
The Hard War
Complete a Long Game on all 5 Core Maps on Hard Difficulty. 		2010-07-15 17:33:14
Killing Floor 3.5%
Hard Pub Crawl
Win a Long Game on West London on Hard Difficulty. 		2010-07-15 17:32:09
Killing Floor 7.8%
Steel Worker
Win a Long Game on Foundry, on Hard Difficulty. 		2010-07-14 17:37:53
Killing Floor 4.2%
Duke of the Manor
Win a Long Game on Manor on Hard Difficulty. 		2010-07-14 16:41:49
Killing Floor 5.7%
Hard Boss
Win a Long Game on Offices on Hard Difficulty. 		2010-07-13 17:24:29
Killing Floor 4.8%
Cattle Farmer
Win a Long Game on Farm on Hard Difficulty. 		2010-07-13 15:55:56
Killing Floor 4.8%
Lab Assistant
Win a Long Game on Biotics Lab on Hard Difficulty. 		2010-07-13 14:52:21
Killing Floor 7.2%
Long, Hot Summer
Complete a Long Game on all 3 Summer 2009 maps on Normal Difficulty. 		2010-07-12 14:25:25
Killing Floor 4.1%
A Bit Barmy
Win a Long Game on Bedlam, on Normal Difficulty. 		2010-07-12 14:25:15
Killing Floor 6.4%
Experimentilottacide
Kill 10,000 Specimens. 		2010-07-10 15:22:41
Killing Floor 13.4%
Straight Rush
Kill the Patriarch Before he has a Chance to Heal. 		2010-07-09 17:44:30
Killing Floor 39.5%
The Long War
Complete a Long Game on all 5 Core Maps on Normal Difficulty. 		2010-07-07 16:02:23
Killing Floor 6.4%
The Boss
Win a Long Game on Offices on Normal Difficulty. 		2010-07-07 16:02:04
Killing Floor 10.4%
Fascist Dietitian
Kill 200 Bloats. 		2010-07-07 15:49:54
Killing Floor 16.0%
Random Axe of Kindness
Kill 15 Specimens with a Fire Axe in a Single Wave. 		2010-07-07 13:24:59
Killing Floor 22.5%
Master Surgeon
As a Medic, Kill 8 Specimens using a Knife in a Single Wave. 		2010-07-07 13:22:44
Killing Floor 8.8%
Pub Crawl
Win a Long Game on West London on Normal Difficulty. 		2010-07-06 18:20:59
Killing Floor 19.0%
Chicken Farmer
Win a Long Game on Farm on Normal Difficulty. 		2010-07-06 17:37:08
Killing Floor 11.4%
Squirrel King of the Dark Forest
Win a Long Game on Wyre, on Normal Difficulty. 		2010-07-06 16:40:51
Killing Floor 6.4%
Lord of the Manor
Win a Long Game on Manor on Normal Difficulty. 		2010-07-06 15:50:58
Killing Floor 12.1%
Quarter Pounder With Ease
Turn 5 Fleshpounds into Giblets. 		2010-07-05 15:25:48
Killing Floor 16.6%
Homer's Heroes
Kill 100 Sirens. 		2010-07-04 17:00:24
Killing Floor 20.3%
Self Medicator
In Co-op Mode, Use Syringe on Yourself 100 Times. 		2010-07-03 18:07:23
Killing Floor 28.3%
Careful Spender
Kill 4 Specimens with a Single Shot from a Hunting Shotgun. 		2010-07-03 17:58:12
Killing Floor 16.9%
Getting Chunky
Obliterate 10 Zeds at once with the Pipe Bomb. 		2010-07-03 16:57:53
Killing Floor 15.8%
Experimentimillicide
Kill 1,000 Specimens. 		2010-07-03 16:37:36
Killing Floor 38.1%
Philanthropist
Give 1,000 Pounds to Teammates who have 50% of Your Cash or Less. 		2010-07-03 16:22:51
Killing Floor 32.4%
Tin Man
Win a Long Game on Foundry, on Normal Difficulty. 		2010-07-02 16:59:18
Killing Floor 7.0%
Safety First
Survive a shot to the head because you had the good sense to wear a helmet 		2010-06-27 16:22:13
Counter-Strike: Source 46.7%
Someone Set Up Us The Bomb
Win a round by planting a bomb 		2010-06-27 16:13:36
Counter-Strike: Source 38.5%
Shot With Their Pants Down
Kill an enemy player while they are reloading 		2010-06-27 16:12:49
Counter-Strike: Source 62.3%
Fratricide
Do whatever it takes to survive. 		2010-05-17 18:49:28
Portal 63.8%
FORE!
Knock off the heads of 18 infected with the golf club. 		2010-05-15 10:34:27
Left 4 Dead 2 11.4%
Tag 'em and bag 'em
Find Rojas in the Favelas. 		2010-03-23 04:56:03
Call of Duty: Modern Warfare 2 (2009) 56.3%
Elbow Grease
Push the cart on Dark Forest. 		2010-03-03 18:19:19
Age of Chivalry 16.1%
Social Outburst
Kill 8 Specimens with One Grenade. 		2010-01-21 19:09:50
Killing Floor 50.6%
WEATHERMAN
Survive the Hard Rain campaign. 		2010-01-19 13:59:38
Left 4 Dead 2 22.4%
Too Close For Comfort
Finish off a Fleshpound using a Melee Attack. 		2010-01-16 07:59:41
Killing Floor 21.4%
Stealth Adept
Using Ninja Mono, earn Stealth. 3 min minimum. 		2010-01-16 06:48:16
Audiosurf 14.0%
Lab Cleaner
Win a Long Game on Biotics Lab on Normal Difficulty. 		2010-01-15 13:03:03
Killing Floor 15.2%
PRICE CHOPPER
Survive the Dead Center campaign. 		2010-01-13 10:33:34
Left 4 Dead 2 39.9%
Brutus
Dethrone a friend from a global scoreboard. 		2010-01-05 16:08:30
Audiosurf 2.8%
I'm the Juggernaut…
Kill a Juggernaut in Special Ops. 		2010-01-01 14:37:35
Call of Duty: Modern Warfare 2 (2009) 27.7%
Specialist
Earn 30 stars in Special Ops. 		2009-12-30 22:22:47
Call of Duty: Modern Warfare 2 (2009) 17.4%
It Goes to Eleven
Earn at least 1 star in 11 different Special Op missions. 		2009-12-30 21:32:21
Call of Duty: Modern Warfare 2 (2009) 24.1%
The Harder They Fall
Kill 2 rappelling enemies in a row before they land on their feet in Single Player or Special Ops. 		2009-12-17 17:15:04
Call of Duty: Modern Warfare 2 (2009) 49.7%
Hotel Bravo
Earn 4 stars in Special Ops. 		2009-12-17 17:05:52
Call of Duty: Modern Warfare 2 (2009) 41.4%
CRASS MENAGERIE
Kill one of each Uncommon Infected. 		2009-12-01 18:24:11
Left 4 Dead 2 39.2%
CHAIN OF COMMAND
Kill 100 Common Infected with the chainsaw. 		2009-11-30 19:19:58
Left 4 Dead 2 25.4%
ACID REFLEX
Kill a Spitter before she is able to spit. 		2009-11-30 19:19:58
Left 4 Dead 2 66.6%
CLUB DEAD
Use every melee weapon to kill Common Infected. 		2009-11-30 18:54:11
Left 4 Dead 2 18.6%
HEAD HONCHO
Decapitate 200 Infected with a melee weapon. 		2009-11-30 15:07:33
Left 4 Dead 2 23.9%
ARMORY OF ONE
Deploy an ammo upgrade and have your team use it. 		2009-11-30 14:37:16
Left 4 Dead 2 51.6%
STACHE WHACKER
Prove you are faster than Moustachio. 		2009-11-29 18:33:59
Left 4 Dead 2 5.3%
A RIDE DENIED
Kill a Jockey within 2 seconds of it jumping on a Survivor. 		2009-11-29 15:56:12
Left 4 Dead 2 65.1%
Ghost
Plant the C4 in 'Cliffhanger' without alerting or injuring anyone in the blizzard. 		2009-11-17 17:15:22
Call of Duty: Modern Warfare 2 (2009) 4.5%
Black Diamond
Complete 'Cliffhanger' on Veteran Difficulty. 		2009-11-17 17:15:22
Call of Duty: Modern Warfare 2 (2009) 14.2%
First Day of School
Complete 'S.S.D.D.' and 'Team Player' on Veteran Difficulty. 		2009-11-17 17:15:22
Call of Duty: Modern Warfare 2 (2009) 13.0%
Cold Shoulder
Infiltrate the snowy mountain side base. 		2009-11-17 17:15:22
Call of Duty: Modern Warfare 2 (2009) 62.6%
Danger Close
Get hand picked for Shepherd's elite squad. 		2009-11-17 17:15:22
Call of Duty: Modern Warfare 2 (2009) 62.1%
Desperado
Kill 5 enemies in a row using 5 different weapons or attachments in Single Player or Special Ops. 		2009-11-17 17:04:24
Call of Duty: Modern Warfare 2 (2009) 21.5%
No Rest For the Wary
Knife an enemy without him ever knowing you were there in Single Player or Special Ops. 		2009-11-17 17:04:24
Call of Duty: Modern Warfare 2 (2009) 35.8%
Three-some
Kill at least 3 enemies with a single shot from a grenade launcher in Single Player or Special Ops. 		2009-11-17 17:04:24
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. 		2009-11-17 17:04:24
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. 		2009-11-17 15:44:22
Call of Duty: Modern Warfare 2 (2009) 8.4%
Gold Star
Earn 1 star in Special Ops. 		2009-11-17 15:44:22
Call of Duty: Modern Warfare 2 (2009) 54.6%
Back in the Saddle
Help train the local militia. 		2009-11-17 15:44:22
Call of Duty: Modern Warfare 2 (2009) 65.7%
KABOOOM!
Push the bomb cart in Helms Deep. 		Unlocked
Age of Chivalry 12.9%
Look Ma Two Hands
Kill 10 enemies in a row using akimbo weapons in Single Player or Special Ops. 		Unlocked
Call of Duty: Modern Warfare 2 (2009) 21.1%
Blackjack
Earn 21 stars in Special Ops. 		Unlocked
Call of Duty: Modern Warfare 2 (2009) 22.8%
Charlie On Our Six
Earn 8 stars in Special Ops. 		Unlocked
Call of Duty: Modern Warfare 2 (2009) 38.0%
Unnecessary Roughness
Use a riot shield to beat down an enemy in Single Player or Special Ops. 		Unlocked
Call of Duty: Modern Warfare 2 (2009) 46.1%
Some Like it Hot
Kill 6 enemies in a row using a thermal weapon in Single Player or Special Ops. 		Unlocked
Call of Duty: Modern Warfare 2 (2009) 56.4%
Experimenticenticide
Kill 100 Specimens. 		Unlocked
Killing Floor 68.0%
It's Not Easy Being Greasy
Cause a Specimen to Die by Luring them into Bloat Acid. 		Unlocked
Killing Floor 67.3%
Secondary Silo Secured
Secure the launch doors on missile silo 2. 		Unlocked
Half-Life 2: Episode Two 70.2%
Into the Breach
Help Griggs and Sheckley hold off the antlion invasion inside the mine shaft. 		Unlocked
Half-Life 2: Episode Two 83.3%
Acid Reflex
Kill an acid antlion worker. 		Unlocked
Half-Life 2: Episode Two 90.4%
Ninjutsu
Stealth and collect every color block. 3 min minimum. 		Unlocked
Audiosurf 14.9%
Stainless
Earn Clean Finish and Gold 3 times in a row. 		Unlocked
Audiosurf 27.1%
PPM 30,000
30000 points per minute. 3 minute minimum. 		Unlocked
Audiosurf 31.1%
Olympian
Earn triple a gold medal requirement. 2 min minimum. 		Unlocked
Audiosurf 68.5%
PPM 10,000
10000 points per minute. 3 minute minimum. 		Unlocked
Audiosurf 76.7%
Royal Ride
Earn Gold without overfilling. 2 min minimum. 		Unlocked
Audiosurf 80.3%
Terminal Velocity
Fall 30,000 feet. 		Unlocked
Portal 8.7%
Friendly Fire
Knock down a turret with another turret. 		Unlocked
Portal 49.2%
Lab Rat
Acquire the fully powered Aperture Science Handheld Portal Device. 		Unlocked
Portal 81.5%