Once you've hit the ground, follow the path through the
wreckage and towards the opening on the far end. Welcome to the real
Nova Prospekt. You'll see Alyx being attacked, so drop down to the lower
level and follow her. She'll drop down from her vantage point to get to
you. After the short reunion, follow Alyx through the locked door, around
the corridor and into the elevator. There's more talking in this chapter
than the last few, so there's more downtime from the combat. Don't worry
though, things get very hectic later on.
Once the elevator opens, three combine will come at you. With Alyx's help, you can easily take care of them (she can die though, so don't leave all the work to her). Again, due to the close proximity, it's best to just use the shotgun. After they're all dead, collect the ammo they've dropped and follow Alyx into the control chamber. She'll eventually find Eli via the control panel, and have his pod delivered to the upper level. Follow Alyx back into the corridor and through the force field.
Try to get to the flight of stairs in front of you before Alyx, as two combine will come down and can easily kill Alyx quickly (and since Alyx is blocking your path, it makes it harder to hit them). Up the flight of stairs, there will be a forcefield on the right with two combine, and another combine on the left. Take care of them all quickly, then follow Alyx around the corner to another combine door. There's a small side-room here with some ammo in a crate, so take advantage of it while Alyx unlocks the door.
This is the upper room with Eli's pod; you've finally found him! Unfortunately, it won't be easy getting him out. Alyx will explain the plan to Eli, and after an emotional goodbye, will send Eli to the teleportation chamber of Nova Prospekt. Follow Alyx out of the room and to the other locked door. Say your own goodbyes, and go through it. There will be some boxes in front of you and a side-room to the left; dispose of the headcrabs in the room, and take the supplies from the crates. Go back and destroy the boxes blocking your way. You will come to a locked prison gate, which Alyx will eventually open (you'll have to wait for her to patch into the security system first).
Once she gets the door open, head for the end of the corridor. She'll try to get this one open, but it's jammed. Follow her instructions and go to the small office near the first unlocked gate. There will be some shelves here, and behind them a vent, so get rid of the shelves and climb in. There's a few headcrabs in here, but nothing to really worry about; just don't waste ammo on them and use the crowbar instead. You'll eventually get to the other side, but before going through, make sure you shoot the vent out with the gravity gun. There's a tripmine on the other side below you, and the vent should catch the laser and blow it up. If not, just use some grenades. Watch out for the fast headcrabs here as well; you can either use grenades (there's plenty of spares on the ground), or the crowbar. But again, don't waste too much ammo, you'll need it.
Alyx will open the next gate for you. Once you enter the office, four combine will enter from a locked gate further into the room. A couple more may enter as well, so make sure they're all gone once you continue. There are two sentry guns on the other side of the corridor that the combine came through, so grab a table or filing cabinet and use it as a shield. Once you're close enough, knock them down. The next room will have some combine behind a turret stand, so aim high. Some more combine will appear from the next room as well. After all the combine are gone from this and the next room, keep going and you'll end up against a force field. You can't reach the plug with your gravity gun, but you can throw a grenade through the field. So throw a grenade into the room behind the field, and the blast should get rid of the plug. Grab the supplies and keep going.
There's a sentry gun right around the corner, so grab it and throw it into the next corridor as fast as you can, before it activates. There are two more sentry guns at the other end of this corridor as well. If you want to take them out, go ahead, but it's not necessary. You need to go through the doorway to your left, and down this corridor. After the map loads, Alyx will inform you of the control room up ahead. Take out everyone inside. Alyx will tell you that a lot more are coming. There should be a compartment with two turrets in it; press the switch, then grab the turrets and place them at the top of each of the side staircases leading to the control room (they won't attack you as they've been reprogrammed). Now, a wave of combine will try to get into the control room. as long as you keep the turrets up, you'll be fine (sometimes the combine knock them down with shotguns or by hitting them, so set them upright with the gravity gun). There will also be the occasional manhack, which should be no match for your gravity gun.
After a few minutes, Alyx will emerge from the vent in the ceiling. She'll then activate one of the control consoles and look for Mossman. Looks like she was just as much a bitch as Alyx suggested, as you find her talking to Dr. Breen! After you've found Mossman, Alyx will deactivate the forcefield here and send you on your way as she gets rid of the next level of security. Go down to the lower level, and head down the left corridor. Clear the wreckage in front of the next door, and continue through down the steps. The next room has a few headcrabs and a supply crate, so have your crowbar ready. There will be a door hidden in the shadow on the left, so go through there.
You'll come to another flooded room, but this time some electrical wires have been cut loose, and touching the water will electrocute you. So make sure you don't step on the water! From your vantage point, jump onto the pipes on your left. Some headcrabs will appear, so get rid of them quickly. There will be a walkway opposite you, but don't jump yet as a barnacle is blocking the way. Get rid of it, and then jump over. Go down the left passageway and there will be a gap in the walkway. To get across, you have to use the blue barrels dotted about the room as stepping stones; the easiest way to do this to throw them all down into the gap, and then even them out as you jump from one to the next. It shouldn't be too hard.
Once across, go into the next room. There will be a few zombies in here, though they won't attack you just yet. Use the health recharger in the side-room, then approach the exit. The zombies will now get up, so pick up some objects and throw them (there's a rather large door on the floor nearby, in case you need some help deciding). Once they're dead, go through the doorway and up the stairs. Once you get through the blockage, you'll wind up in yet another prison block. Go across to the stairs and up. Some combine will now appear behind the gates, so get rid of them all, then drop down into the main room. This next bit is extremely hard if you don't know what you're doing, so if you want to get through it easily, follow this strategy.
Alyx will tell you over the radio that more combine will be heading for you. Find the turret compartment in one of the small corridors, and open them up. With these turrets, pick them up, turn them around and place them right back into their compartments. Do this with all three, but make sure to leave one of the middle compartments empty. Once they're all facing outwards in their compartments, get into the free middle one and crouch. The combine will now start to pour into the area, and the turrets can take them out before they reach you (just in case though, have your shotgun ready). If you ever need ammo or health, there are health rechargers in front of you, as well as a heap of dead combine and their dropped ammo. This is going to take a long time, so just sit it out until the combine stop attacking. There may be some manhacks left in the area, so get out of your little hiding place and destroy them. Alyx will now (finally) appear.
Follow Alyx through the now unlocked gate, and down into the basement. After the map loads, go through the double doors and down the corridor. The lights will now go out, and the combine will throw flares into the room. There are a lot of them here, so take advantage of your grenades and pulse rifle secondary fire. After they're all gone, follow Alyx up the stairs. Use the health recharger if you need it, and go into the next security room. Alyx will be able to trap Mossman in another control room nearby. Follow Alyx down the stairs and through the large combine door (some combine might head through the forcefield behind you, so be ready for them). Alyx will now jam the door so the combine won't be able to follow you.
You've finally caught up to Mossman; like Alyx says, let her do the talking. Once you get inside, Alyx will give Mossman quite the verbal beating, so enjoy the show. Alyx will eventually get Eli's pod and send it into the next room, which happens to be the teleporter. Alyx will send Eli into the teleporter, and then contact Dr. Kleiner. All is going to plan so far...that is, until Mossman sneaks into the teleporter and takes Eli! After they disappear, the combine will be trying to get through the doors. Alyx will unlock some turret compartments near the entrance, so grab them and set one up at each entry way (there are three in total; they won't come through the way you did). Same tactics apply here as before, i.e. keep the turrets up and help out as much as possible. The teleporter is going to take a long time to recharge, and there's no hiding place this time, so stay on your toes. The teleporter will, eventually, recharge, and Alyx will motion for you to get onto the platform. Once you're both in, the platform will rise as the whole room starts to fall apart, and you'll be teleported out...
Once the elevator opens, three combine will come at you. With Alyx's help, you can easily take care of them (she can die though, so don't leave all the work to her). Again, due to the close proximity, it's best to just use the shotgun. After they're all dead, collect the ammo they've dropped and follow Alyx into the control chamber. She'll eventually find Eli via the control panel, and have his pod delivered to the upper level. Follow Alyx back into the corridor and through the force field.
Try to get to the flight of stairs in front of you before Alyx, as two combine will come down and can easily kill Alyx quickly (and since Alyx is blocking your path, it makes it harder to hit them). Up the flight of stairs, there will be a forcefield on the right with two combine, and another combine on the left. Take care of them all quickly, then follow Alyx around the corner to another combine door. There's a small side-room here with some ammo in a crate, so take advantage of it while Alyx unlocks the door.
This is the upper room with Eli's pod; you've finally found him! Unfortunately, it won't be easy getting him out. Alyx will explain the plan to Eli, and after an emotional goodbye, will send Eli to the teleportation chamber of Nova Prospekt. Follow Alyx out of the room and to the other locked door. Say your own goodbyes, and go through it. There will be some boxes in front of you and a side-room to the left; dispose of the headcrabs in the room, and take the supplies from the crates. Go back and destroy the boxes blocking your way. You will come to a locked prison gate, which Alyx will eventually open (you'll have to wait for her to patch into the security system first).
Once she gets the door open, head for the end of the corridor. She'll try to get this one open, but it's jammed. Follow her instructions and go to the small office near the first unlocked gate. There will be some shelves here, and behind them a vent, so get rid of the shelves and climb in. There's a few headcrabs in here, but nothing to really worry about; just don't waste ammo on them and use the crowbar instead. You'll eventually get to the other side, but before going through, make sure you shoot the vent out with the gravity gun. There's a tripmine on the other side below you, and the vent should catch the laser and blow it up. If not, just use some grenades. Watch out for the fast headcrabs here as well; you can either use grenades (there's plenty of spares on the ground), or the crowbar. But again, don't waste too much ammo, you'll need it.
Alyx will open the next gate for you. Once you enter the office, four combine will enter from a locked gate further into the room. A couple more may enter as well, so make sure they're all gone once you continue. There are two sentry guns on the other side of the corridor that the combine came through, so grab a table or filing cabinet and use it as a shield. Once you're close enough, knock them down. The next room will have some combine behind a turret stand, so aim high. Some more combine will appear from the next room as well. After all the combine are gone from this and the next room, keep going and you'll end up against a force field. You can't reach the plug with your gravity gun, but you can throw a grenade through the field. So throw a grenade into the room behind the field, and the blast should get rid of the plug. Grab the supplies and keep going.
There's a sentry gun right around the corner, so grab it and throw it into the next corridor as fast as you can, before it activates. There are two more sentry guns at the other end of this corridor as well. If you want to take them out, go ahead, but it's not necessary. You need to go through the doorway to your left, and down this corridor. After the map loads, Alyx will inform you of the control room up ahead. Take out everyone inside. Alyx will tell you that a lot more are coming. There should be a compartment with two turrets in it; press the switch, then grab the turrets and place them at the top of each of the side staircases leading to the control room (they won't attack you as they've been reprogrammed). Now, a wave of combine will try to get into the control room. as long as you keep the turrets up, you'll be fine (sometimes the combine knock them down with shotguns or by hitting them, so set them upright with the gravity gun). There will also be the occasional manhack, which should be no match for your gravity gun.
After a few minutes, Alyx will emerge from the vent in the ceiling. She'll then activate one of the control consoles and look for Mossman. Looks like she was just as much a bitch as Alyx suggested, as you find her talking to Dr. Breen! After you've found Mossman, Alyx will deactivate the forcefield here and send you on your way as she gets rid of the next level of security. Go down to the lower level, and head down the left corridor. Clear the wreckage in front of the next door, and continue through down the steps. The next room has a few headcrabs and a supply crate, so have your crowbar ready. There will be a door hidden in the shadow on the left, so go through there.
You'll come to another flooded room, but this time some electrical wires have been cut loose, and touching the water will electrocute you. So make sure you don't step on the water! From your vantage point, jump onto the pipes on your left. Some headcrabs will appear, so get rid of them quickly. There will be a walkway opposite you, but don't jump yet as a barnacle is blocking the way. Get rid of it, and then jump over. Go down the left passageway and there will be a gap in the walkway. To get across, you have to use the blue barrels dotted about the room as stepping stones; the easiest way to do this to throw them all down into the gap, and then even them out as you jump from one to the next. It shouldn't be too hard.
Once across, go into the next room. There will be a few zombies in here, though they won't attack you just yet. Use the health recharger in the side-room, then approach the exit. The zombies will now get up, so pick up some objects and throw them (there's a rather large door on the floor nearby, in case you need some help deciding). Once they're dead, go through the doorway and up the stairs. Once you get through the blockage, you'll wind up in yet another prison block. Go across to the stairs and up. Some combine will now appear behind the gates, so get rid of them all, then drop down into the main room. This next bit is extremely hard if you don't know what you're doing, so if you want to get through it easily, follow this strategy.
Alyx will tell you over the radio that more combine will be heading for you. Find the turret compartment in one of the small corridors, and open them up. With these turrets, pick them up, turn them around and place them right back into their compartments. Do this with all three, but make sure to leave one of the middle compartments empty. Once they're all facing outwards in their compartments, get into the free middle one and crouch. The combine will now start to pour into the area, and the turrets can take them out before they reach you (just in case though, have your shotgun ready). If you ever need ammo or health, there are health rechargers in front of you, as well as a heap of dead combine and their dropped ammo. This is going to take a long time, so just sit it out until the combine stop attacking. There may be some manhacks left in the area, so get out of your little hiding place and destroy them. Alyx will now (finally) appear.
Follow Alyx through the now unlocked gate, and down into the basement. After the map loads, go through the double doors and down the corridor. The lights will now go out, and the combine will throw flares into the room. There are a lot of them here, so take advantage of your grenades and pulse rifle secondary fire. After they're all gone, follow Alyx up the stairs. Use the health recharger if you need it, and go into the next security room. Alyx will be able to trap Mossman in another control room nearby. Follow Alyx down the stairs and through the large combine door (some combine might head through the forcefield behind you, so be ready for them). Alyx will now jam the door so the combine won't be able to follow you.
You've finally caught up to Mossman; like Alyx says, let her do the talking. Once you get inside, Alyx will give Mossman quite the verbal beating, so enjoy the show. Alyx will eventually get Eli's pod and send it into the next room, which happens to be the teleporter. Alyx will send Eli into the teleporter, and then contact Dr. Kleiner. All is going to plan so far...that is, until Mossman sneaks into the teleporter and takes Eli! After they disappear, the combine will be trying to get through the doors. Alyx will unlock some turret compartments near the entrance, so grab them and set one up at each entry way (there are three in total; they won't come through the way you did). Same tactics apply here as before, i.e. keep the turrets up and help out as much as possible. The teleporter is going to take a long time to recharge, and there's no hiding place this time, so stay on your toes. The teleporter will, eventually, recharge, and Alyx will motion for you to get onto the platform. Once you're both in, the platform will rise as the whole room starts to fall apart, and you'll be teleported out...
