Barney, Alyx and Gordon are preparing to battle with Combine.
I think you've lost something, doctor Freeman...
Alyx Vance is your sidekick throughout the game.
In the heart of the Citadel
Watch out for enemies shooting at you from above.
Trying to kill the Ant Lion Guard.
Fighting an Antlion guard
Fighting some combine soldiers
"Dog" finding you under some trash
Fighting a black headcrab zombie in the hospital
Scary: Zombies in a dark tunnel
A zombie shot by a combine sniper
Strange zombie things in a train
You're taken far away from G-Man.
Kleiner speaks to the City 17 citizens.
First encounter with a "Zombine"
Using an old Trabant to block a hole to stop Antlions coming out
A mindless "stalker" works for the Combine in the Citadel. It is believed that "stalkers" were previously ordinary citizens who were arrested, lobotomized, and physically "customized" by the Combine.