- Blitzkrieg
Win a round in less than 30 seconds (against at least 5 enemy players)
- Piece Initiative
Win 5 Pistol Rounds
- Finishing Schooled
Kill an enemy player who has been reduced to less than 5% health by other players
- Short Fuse
Plant a bomb within 25 seconds
- Someone Set Up Us The Bomb
Win a round by planting a bomb
- Hat Trick
Dominate three enemy players simultaneously
- Black Bag Operation
Win a round while making no footstep noise and killing at least one enemy
- Insurgent
Kill an enemy player that is dominating you
- Ammo Conservation
Kill two enemy players with a single bullet
- Happy Camper
Get two kills standing in the same spot with a zoomed sniper rifle.
- Ten Angry Men
Get 10 kills on enemy players you are already dominating during a single match
- The Art of War
Spray 100 decals
- Excessive Brutality
Kill an enemy player 4 additional times while you are dominating them
- Overkill
Kill an opponent you are already dominating
- Shot With Their Pants Down
Kill an enemy player while they are reloading
- War Bonds
Earn $125,000 total cash
- Body Bagger
Kill 25 enemies
- Points in Your Favor
Inflict 2,500 total points of damage to enemy players
- Newb World Order
Win 10 rounds
- Lost and F0wnd
KIll an enemy player with a gun they dropped that round
- Repeat Offender
Dominate an enemy player
- Boomala Boomala
Plant 100 bombs
- The Hurt Blocker
Defuse 100 bombs
- Second to None
Successfully defuse a bomb with less than one second remaining
- Leet-er of Men
Win 5000 rounds
- Blood Money
Earn $50,000,000 total cash
- Krieg 550 Commando Expert
Kill 500 enemy players with the Krieg 550 Commando
- Schmidt Scout Expert
Kill 1,000 enemy players with the Schmidt Scout
- D3/AU-1 Expert
Kill 500 enemy players with the D3/AU-1
- Rifle Master
Unlock all 10 rifle kill achievements
- ES C90 Expert
Kill 1,000 enemy players with the ES C90
- KM Sub-Machine Gun Expert
Kill 1,000 enemy players with the KM Sub-Machine Gun
- KM UMP45 Expert
Kill 1,000 enemy players with the KM UMP45
- Sub-Machine Gun Master
Unlock all 5 sub-machine gun kill achievements
- Master At Arms
Unlock every weapon kill achievement
- Dead Shepherd
Kill an enemy player who is leading the hostages without injuring any hostages
- Defuse This!
Kill the defuser with an HE grenade
- Piece Treaty
Win 250 Pistol Rounds
- Wild Gooseman Chase
As the last living terrorist, distract a defuser long enough for the bomb to explode
- Assault Map Veteran
Win 100 rounds on the CS_Assault map
- Compound Map Veteran
Win 100 rounds on the CS_Compound map
- Havana Map Veteran
Win 100 rounds on the CS_Havana map
- Italy Map Veteran
Win 100 rounds on the CS_Italy map
- Militia Map Veteran
Win 100 rounds on the CS_Militia map
- Office Map Veteran
Win 100 rounds on the CS_Office map
- Aztec Map Veteran
Win 100 rounds on the DE_Aztec map
- Cobblestone Map Veteran
Win 100 rounds on the DE_Cbble map
- Chateau Map Veteran
Win 100 rounds on the DE_Chateau map
- Dust Map Veteran
Win 100 rounds on the DE_Dust map
- Inferno Map Veteran
Win 100 rounds on the DE_Inferno map
- Nuke Map Veteran
Win 100 rounds on the DE_Nuke map
- Piranesi Map Veteran
Win 100 rounds on the DE_Piranesi map
- Port Map Veteran
Win 100 rounds on the DE_Port map
- Prodigy Map Veteran
Win 100 rounds on the DE_Prodigy map
- Tides Map Veteran
Win 100 rounds on the DE_Tides map
- Train Map Veteran
Win 100 rounds on the DE_Train map
- Aerial Necrobatics
Kill an airborne enemy while you are also airborne
- Cold War
Win a round without your team killing any enemy players
- Killanthropist
Donate 100 weapons to your teammates
- Defusus Interruptus
Stop defusing to kill a terrorist and then successfully finish defusing the bomb
- Dressed to Kill
Start a round with all players on your team wearing the same uniform (at least 5 players)
- Friendly Attire
Start a round on the same team as 4 of your friends, with all of you wearing the same outfit
- The Road to Hell
Blind an enemy player who then kills a teammate
- Clan Warfare
Win a match of at least 10 players where the entirety of each team is composed of a single clan.
- Valve Gift Grab 2011 – CS:S
Collect three gifts dropped by opponents.
Locked - 3 guides