KO a Character: Valve Games

MCS

Donkey Kong
Figured that this is the perfect time to do this since there are 0 KO a Characters in progress right now and this shouldn't take long at all.

Including all games produced by Valve including promotional releases and upcoming games. Also included the Orange Box because it is technically a game, just a bundle of games.

Alien Swarm
Counter-Strike
Counter-Strike: Condition Zero
Counter-Strike: Source
Counter-Strike: Global Offensive
Day of Defeat
Day of Defeat: Source
Deathmatch Classic
Dota 2
Half-Life
Half-Life: Opposing Force
Half-Life: Blue Shift
Half-Life Deathmatch: Source
Half-Life: Decay
Half-Life: Day One
Half-Life: Uplink
Half-Life 2
Half-Life 2: Deathmatch
Half-Life 2: Lost Coast
Half-Life 2: Episode One
Half-Life 2: Episode Two
Left 4 Dead
Left 4 Dead 2
Portal
Portal 2
Ricochet
Team Fortress Classic
Team Fortress 2
The Orange Box

You all know the rules. Hopefully
 
how do you play?

SO MANY HALF LIFES

Alien Swarm
Counter-Strike
Counter-Strike: Condition Zero
Counter-Strike: Source
Counter-Strike: Global Offensive
Day of Defeat
Day of Defeat: Source
Deathmatch Classic
Dota 2
Half-Life
Half-Life: Opposing Force
Half-Life: Blue Shift
Half-Life Deathmatch: Source
Half-Life: Decay
Half-Life: Day One
Half-Life: Uplink
Half-Life 2
Half-Life 2: Deathmatch
Half-Life 2: Lost Coast
Half-Life 2: Episode One
Half-Life 2: Episode Two
Left 4 Dead
Left 4 Dead 2
Portal
Portal 2
Ricochet
Team Fortress Classic
Team Fortress 2
The Orange Box
 
KO Deathmatch Classic

Alien Swarm
Counter-Strike
Counter-Strike: Condition Zero
Counter-Strike: Source
Counter-Strike: Global Offensive
Day of Defeat
Day of Defeat: Source
Half-Life
Half-Life: Opposing Force
Half-Life: Blue Shift
Half-Life Deathmatch: Source
Half-Life: Decay
Half-Life: Day One
Half-Life: Uplink
Half-Life 2
Half-Life 2: Deathmatch
Half-Life 2: Lost Coast
Half-Life 2: Episode One
Half-Life 2: Episode Two
Left 4 Dead
Left 4 Dead 2
Portal
Portal 2
Ricochet
Team Fortress Classic
Team Fortress 2
The Orange Box
 
KO Half-Life: Opposing Force

Alien Swarm
Counter-Strike
Counter-Strike: Condition Zero
Counter-Strike: Source
Counter-Strike: Global Offensive
Day of Defeat
Day of Defeat: Source
Half-Life
Half-Life: Blue Shift
Half-Life Deathmatch: Source
Half-Life: Decay
Half-Life: Day One
Half-Life: Uplink
Half-Life 2
Half-Life 2: Deathmatch
Half-Life 2: Lost Coast
Half-Life 2: Episode One
Half-Life 2: Episode Two
Left 4 Dead
Left 4 Dead 2
Portal
Portal 2
Ricochet
Team Fortress Classic
Team Fortress 2
The Orange Box
 
KO Ricochet

Alien Swarm
Counter-Strike
Counter-Strike: Condition Zero
Counter-Strike: Source
Counter-Strike: Global Offensive
Day of Defeat
Day of Defeat: Source
Half-Life
Half-Life: Blue Shift
Half-Life Deathmatch: Source
Half-Life: Decay
Half-Life: Day One
Half-Life: Uplink
Half-Life 2
Half-Life 2: Deathmatch
Half-Life 2: Lost Coast
Half-Life 2: Episode One
Half-Life 2: Episode Two
Left 4 Dead
Left 4 Dead 2
Portal
Portal 2
Team Fortress Classic
Team Fortress 2
The Orange Box
 
KO Lost Coast

Alien Swarm
Counter-Strike
Counter-Strike: Condition Zero
Counter-Strike: Source
Counter-Strike: Global Offensive
Day of Defeat
Day of Defeat: Source
Half-Life
Half-Life: Blue Shift
Half-Life Deathmatch: Source
Half-Life: Decay
Half-Life: Day One
Half-Life: Uplink
Half-Life 2
Half-Life 2: Deathmatch
Half-Life 2: Episode One
Half-Life 2: Episode Two
Left 4 Dead
Left 4 Dead 2
Portal
Portal 2
Team Fortress Classic
Team Fortress 2
The Orange Box
 
KO Counter-Strike: Global Offensive

Alien Swarm
Counter-Strike
Counter-Strike: Condition Zero
Counter-Strike: Source
Day of Defeat
Day of Defeat: Source
Half-Life
Half-Life: Blue Shift
Half-Life Deathmatch: Source
Half-Life: Decay
Half-Life: Day One
Half-Life: Uplink
Half-Life 2
Half-Life 2: Deathmatch
Half-Life 2: Episode One
Half-Life 2: Episode Two
Left 4 Dead
Left 4 Dead 2
Portal
Portal 2
Team Fortress Classic
Team Fortress 2
The Orange Box
 
KO H-L Decay

Alien Swarm
Counter-Strike
Counter-Strike: Condition Zero
Counter-Strike: Source
Day of Defeat
Day of Defeat: Source
Half-Life
Half-Life: Blue Shift
Half-Life Deathmatch: Source
Half-Life: Day One
Half-Life: Uplink
Half-Life 2
Half-Life 2: Deathmatch
Half-Life 2: Episode One
Half-Life 2: Episode Two
Left 4 Dead
Left 4 Dead 2
Portal
Portal 2
Team Fortress Classic
Team Fortress 2
The Orange Box
 
KO Day of Defeat

Alien Swarm
Counter-Strike
Counter-Strike: Condition Zero
Counter-Strike: Source
Day of Defeat: Source
Half-Life
Half-Life: Blue Shift
Half-Life Deathmatch: Source
Half-Life: Day One
Half-Life: Uplink
Half-Life 2
Half-Life 2: Deathmatch
Half-Life 2: Episode One
Half-Life 2: Episode Two
Left 4 Dead
Left 4 Dead 2
Portal
Portal 2
Team Fortress Classic
Team Fortress 2
The Orange Box
 
KO Day of Defeat: Source

Alien Swarm
Counter-Strike
Counter-Strike: Condition Zero
Counter-Strike: Source
Half-Life
Half-Life: Blue Shift
Half-Life Deathmatch: Source
Half-Life: Day One
Half-Life: Uplink
Half-Life 2
Half-Life 2: Deathmatch
Half-Life 2: Episode One
Half-Life 2: Episode Two
Left 4 Dead
Left 4 Dead 2
Portal
Portal 2
Team Fortress Classic
Team Fortress 2
The Orange Box
 
KO H-L Uplink

Alien Swarm
Counter-Strike
Counter-Strike: Condition Zero
Counter-Strike: Source
Half-Life
Half-Life: Blue Shift
Half-Life Deathmatch: Source
Half-Life: Day One
Half-Life 2
Half-Life 2: Deathmatch
Half-Life 2: Episode One
Half-Life 2: Episode Two
Left 4 Dead
Left 4 Dead 2
Portal
Portal 2
Team Fortress Classic
Team Fortress 2
The Orange Box