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Half-Life 2: Episode One cover

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.

Shooter Action Science fiction Horror
2006 ★ 85 13 achievements
13 achievements
Watch Your Head!

Watch Your Head!

38.7%

Make it to the bottom of the Citadel's main elevator shaft in one piece.

Containment

Containment

37.0%

Contain the Citadel core.

Elevator Action

Elevator Action

32.5%

Survive long enough to get on the parking garage elevator.

Attica!

Attica!

30.6%

Destroy the gunship in the hospital attic.

Escape From City 17

Escape From City 17

28.7%

Escape City 17 with Alyx.

Citizen Escort

Citizen Escort

18.1%

Don't let any citizens die when escorting them to the escape train.

Live Bait

Live Bait

18.0%

Help Alyx snipe 30 enemies in Episode One.

Think Fast!

Think Fast!

15.6%

Kill an Elite Soldier with his own energy ball.

Car Crusher

Car Crusher

8.6%

Use the cars to squash 15 antlions in Episode One.

Pacifist

Pacifist

5.2%

Contain the Citadel core without killing any stalkers.

Conservationist

Conservationist

4.7%

Kill five enemies with the same energy ball.

The One Free Bullet

The One Free Bullet

4.2%

Finish the game firing exactly one bullet. Grenade, crowbar, rocket, and Gravity Gun kills are okay!

Zombie-que

Zombie-que

3.8%

Use flares to light 15 zombies on fire.

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