We’ve got a long way to go to get the antlion essence for the vortigaunts back at the base. if you want to save Alyx, you’ve got a lot of zombies and antlions to kill before you’re done. You’ve also got an antlion queen to outrun. If you need any help surviving, then look here.
This long chapter is basically a 2 part mission. We need to hold our ground against a large antlion force before we head off to the core of the antlion nest. If you need any help holding out against the antlion hordes, then look here.
It’s almost time for us to finally escape from the sewers of City 17. We need to get past a lot of antlions and make a last stand around the elevator if we want to get out of this alive. If you need any help getting through the zombie hordes, then look here.
It’s time to finally say goodbye to City 17. It’s your job to safely lead the evacuation from the last safehouse to the train yard. You’ll have a running gun battle with Combine attackers for a good 10 minutes. It also has a strider battle, so good luck. If you need any help, look here.
You’re one step closer to Barney and the resistance. You’ll have to make it past a few puzzles though if you want to find them. You need to escape the explosive trap, kill some combine, help Barney, and destroy the gunship at the hospital. If you need any help, then look here.
We’re back out into the sun, but it’s not much safer. City 17 is falling apart at the seems and we’re right in the middle of it. You need to help the resistance regain control if you want to survive. If you need any help in this battle, then just look here.
It should shock no one that the hospital isn’t a friendly place. There are lots of zombies and combine soldiers each looking for Gordon and Alyx, so it’s going to get heated. If you need any help getting out of the hospital, then just take a look here.
Gordon and Alyx are going to have to take a little bit of a detour on their evacuation route. They’ll need to climb through a lot of dark tunnels and kill a lot of zombies and zombine before they’ll be free. If you need any help with the first stages of this zombie escape, then look here.
It seems that Gordon has to now repair the Citadel reactor he just helped damage. You’ll need to push through waves of Combine soldiers and manage a lot of energy core puzzles to successfully contain the pulsing reactor core. If you need any help with this puzzle level, then just look here.
Gordon Freeman has escaped from the G-man and now has to do a bit of maintenance work on the Citadel. You’ll have to deal with a few stalkers and start working your way through the ruins of the collapsing Citadel. If you need any help with your return to City 17, then just check here.