Half-Life 2: Episode One
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Half-Life 2: Episode One is the first of a planned trilogy of expansion packs/episodes for the 2004 first-person shooter game, Half-Life 2. The episode takes place immediately after the end of Half-Life 2, in the war-torn setting of City 17. The player is forced to deal with the effects of their actions during the main game. The episode is a stand-alone game; while a continuation of Half-Life 2, it does not require the original game to be installed or registered to a user's Steam account to play. It takes advantage of several major upgrades to the Source engine since the release of Half-Life 2, primarily its high dynamic range rendering capabilities and the upgraded facial animation system. Episode One was released together with Half-Life Deathmatch: Source, a port of the original Half-Life's multiplayer, which doubles as Episode One's multiplayer component. The retail copies of Episode One also come with Half-Life 2 Deathmatch for those who have not previously purchased the later title.
Watch Your Head!
Uncommon38.7%Make it to the bottom of the Citadel's main elevator shaft in one piece.
Containment
Uncommon37.0%Contain the Citadel core.
Elevator Action
Uncommon32.5%Survive long enough to get on the parking garage elevator.
Attica!
Uncommon30.6%Destroy the gunship in the hospital attic.
Escape From City 17
Uncommon28.7%Escape City 17 with Alyx.
Citizen Escort
Uncommon18.1%Don't let any citizens die when escorting them to the escape train.
Live Bait
Uncommon18.0%Help Alyx snipe 30 enemies in Episode One.
Think Fast!
Uncommon15.6%Kill an Elite Soldier with his own energy ball.
Car Crusher
Rare8.6%Use the cars to squash 15 antlions in Episode One.
Pacifist
Rare5.2%Contain the Citadel core without killing any stalkers.
Conservationist
Very rare4.7%Kill five enemies with the same energy ball.
The One Free Bullet
Very rare4.2%Finish the game firing exactly one bullet. Grenade, crowbar, rocket, and Gravity Gun kills are okay!
Zombie-que
Very rare3.8%Use flares to light 15 zombies on fire.
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