To The White Forest

The Opening Chapter to Half-Life 2: Episode Two, To White Forest details Gordon Freeman and Alyx Vance's first steps outside City 17 since its destruction, and the beginning of their journey to White Forest.

Walkthrough
Walk down the train, jump where instructed. Take the Grav Gun off Alyx and head to the open train carriage to your right. Blast the left door open. Go and watch the light show; the crash will damage the fence opposite the carriage you just came through. Jump over, advance down the corridor until you come to a hole in the floor. Jump through and turn right. Your advance should trigger a battle between Antlions and Zombies. Watch out for a Zombie to your immediate right. Keep going, join in if you like, its not really necessary to. Watch out for the hole where the Zombies came out through. The appearance of a Zombine should be the end of things. Walk into the comms centre. When Alyx starts poking around a plug will fall down beneath her, plug this into the wall socket.

Once the transmission is done advance through the far door. Smash the crate and turn right inside, watch out for a Poison Headcrab. Walk down the slope and then up again to the cart stacked with scrap. Smash the wood in front of it, it will come loose and smash the barricade at the bottom. Climb through and walk up the slope to the right. Oops, what was that? Put it out of mind and walk left of the wire fence and drop down into the mining complex. Go in between the mining carts to the right and climb up the ladder. Jump carefully over to the building to the immediate right of the gate Alyx is in front of. Pull off the loose metal sheet on the right side of the roof, drop down. Activate the button in front of the window, turn around, try not to jump. If you're on full health, you may like to take the first aid here with you. Pull out the metal spur jamming the trapdoor on the floor, crawl in and out. Bonk, stab. Is this the end?...

Once you're free lead the Vortigaunt through the now open gate. Turn left and then left again. There will be a jammed lift at the far left end. Get in, wrest the crowbar out with the Grav Gun. Get out and avail yourself of the pistol on the shelf opposite. Crowbar your way into the office and through the door on the right.

Get onto the lift and hold Use on the valve. Jump off quickly when you get to the top and advance to the hole in the floor. The Antlion here is not interested in you, don't waste ammo on it. Drop down and it should run away. Follow it and turn right. Carry on until you reach the wide hole. Be careful of falling objects here, if the ground shakes step away from holes. Drop down into the cart, then forwards and down again. Beware the Poison Headcrab. Forward and down again. If you're going for the Gettin' Some Grub achievement, start here! Drop down into the water, and then up into the tunnel. Head down the tunnel, whack open the web. Keep going, drop down.

The Worker will not be terribly pleased to see you. Dodge its attacks, kill it with the pistol. Head forwards and left. The two Workers here can't get at you very well, it's up to you whether you want to fight them for the supply crates. Turn left and get the shotgun and the supplies here. Whack open the hole, crawl through the tunnel and up again. Go forwards, punt the barrels out of the way and turn left. Two more Workers will be a right pain to you here. Once they're dead walk along the path to the right and around. Jump down into the water, immediately turn around to fight another Worker. Get the supplies and advance into the next area. Careful of the Barnacles. Wade out into the water and under, you'll see a tunnel ahead. Swim through, an Antlion will kill itself in an amusing fashion in front of you.

Up to you how you do this next bit. If you're clever about it you can get most of the Antlions that appear from the far end to run into Barnacles or the water. You can kill two birds with one stone if you get the Workers to run into Barnacles. However you do it keep going to the far end and into the passageway veering right. Jump into the pool of water in front of you; the Antlions ahead should kill themselves getting at you. Jump out, keep going forwards. Remember to kill Grubs to replenish health. Crawl down a narrow passageway, avail yourself of the Magnum, and you're done.