Alyx will work on the mine so you can use it drop it with and let it do its job so you can continue. Push a button near a mine vent and pick up one, then take it to the glass elevator rising up back to where you were. Try to drop down to a glass floor as soon as you can. In order to breach the room that they're in, you'll need to crawl to the side by some windows to find some chaser mines. Stalkers are lanky, misshapen creatures you may have seen around the Citadel in Half-Life 2. When you reach a broken glass path, jump over the rail to the left and you'll come across a room with a few stalkers. Head left towards a small fire to continue. Move along the ledges with Alyx and push a car out of the way, then get in the passenger seat of another car while Dog drives you to the Citadel. After talking to the two scientists at a safe distance, you and Alyx will head off to the Citadel to slow down the dark energy reaction. After retrieving your gravity gun, which has devolved back to its standard form, pull some wooden planks away from a metal gate so you can walk up it.

Full Ammo (Current Weapon): Chapter 1: Undue AlarmĪfter the opening cutscene, Alyx and Dog will find Gordon out of the rubble of the Citadel.

Half life 2 episode one walk through