Half-Life 2: Episode One

Half-Life 2 has sold over 4 million copies worldwide, and earned over 35 Game of the Year Awards. Episode One is the first in a series of games that reveal the aftermath of Half-Life 2 and launch a journey beyond City 17. Also features two multiplayer games. Half-Life 2 not required.
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  • Watch Your Head!


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

  • Containment


    Contain the Citadel core.

  • Elevator Action


    Survive long enough to get on the parking garage elevator.

  • Attica!


    Destroy the gunship in the hospital attic.

  • Citizen Escort


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

  • Escape From City 17


    Escape City 17 with Alyx.

  • Pacifist

    Contain the Citadel core without killing any stalkers.

  • Car Crusher

    Use the cars to squash 15 antlions in Episode One.

  • Live Bait

    Help Alyx snipe 30 enemies in Episode One.

  • The One Free Bullet

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

  • Conservationist

    Kill five enemies with the same energy ball.

  • Think Fast!

    Kill an Elite Soldier with his own energy ball.

  • Zombie-que

    Use flares to light 15 zombies on fire.