In fact, in almost every way possible Episode One is a success for Valve. These are hallmarks of Valve's storytelling at this point, though, and I don't begrudge them the need to keep us begging for more. If I had as many 'fade to white' moments in my life as Gordon has, I'd be awfully confused. Like HL2 proper, the end of the episode is a major cliffhanger. The fate of Doctor Mossman, in particular, is a nagging question her exploits are a briefly mentioned plot thread that is never readdressed or resolved. There are a few answers, some disappointing cop-outs, and a lot of new questions raised. Episode One's story centers on the escape from City 17, the aftermath of the events of the original game, and the relationships between the resistance movement members. Within minutes, you're back in the thick of things, hard at work playing liberator to the human race. Episode One picks up immediately after HL2 leaves off, and quickly reacquaints you with Alyx Vance and her robotic comrade. Elation at the completion of a fantastic shooter, and frustration at the sudden ending to the game's engaging story.

The climactic finale to Half-Life 2 ( HL2) left most players with mixed emotions.

Half life 2 episode one walk through