06. Sewers - Shepherd's Glen's Underground
Time for a sewer level! Head forward and Elle will point out a valve by gate 3. Turn it and let her under, and she'll return the favor. The path here is pretty linear. When you drop down into the water, watch for Lurkers. They will target Elle as well as Alex, but I'm fairly sure Elle cannot die here. She sure as hell won't help you fight though. Out of the water, you'll find PISTOL AMMUNITION x2 on the blue tank.
After dropping down, look to your left for a raised area with a wire fence. Pry it open with your steel pipe and turn the valve back here to drain some water up ahead. Ignore the area with the ladder you just drained and go past it for a save point and a small room with the SEWER MAP and SHOTGUN AMMUNITION. Drop down into the small pool you drained and climb up the other side. Continue along the linear path. Look for a raised area to your left when heading south; there's a HEALTH DRINK up there. Turn the valve at the end of this path to let Elle under the gate. She can't do the same this time, so you have to backtrack all the way to where you first dropped into the sewers. Needlers are going to attack you on the way, too. Either fight or run; it doesn't matter. Just know that Needlers can climb ledges after you. Stand by gate number 4 and Elle will raise it for you.
A Needler will attack first thing through. Use Elle as bait if you want. It's a good way to get behind the monster to attack its weak side. Along this path, look for an alcove to your right with SHOTGUN AMMUNITION. You will need it. Another Needler will attack from an alcove. Kill it and drop down the ladder it was guarding. In the spillway, two Lurkers are lurking. Elle will cower in fear until they are gone, meaning you must kill them to progress. Climb up on the other side once they're gone. Kill the Needler here and go to the far end of the hall for SHOTGUN AMMUNITION and PISTOL AMMUNITION. Pull the lever by the light to open the gate to your left. Make the long drop and look to the right for a room with a save point.
Head right for the main drain chamber. There is a gate here that you must let Elle through. After this, you are stranded and three Needlers will attack. It is highly recommended that you run back to where the save point is. That way, you can take them on almost one at a time since they will be slow in following you. I don't know what it is about Needlers in the sewers, but they have a habit of attacking you and then inexplicably running away, only to turn right around and come back. Save your ammo though. You'll see why.
When all three are dead, you should hear some interesting sounds coming from Elle's location. Head back to the main drain chamber with your shotgun out. Turn around as soon as you hit the gate because a Siam is barreling up right behind you. The gate opens once it's dead. Be sure to check the alcove to your left in this hall for a PHOTO. Oh, and there's copious amounts of blood on the ground ahead. Follow it out into the fresh air.
You'll emerge outside your house, but the front door is inaccessible. Head down the street to get a call on the radio. Two Ferals are up ahead on either side of the street. Go to one side and then the other to confront them one at a time. You destination is the doctor's office, circled on your map. Just look for a trail of blood outside and follow it in.
Check behind reception for a HEALTH DRINK. The only open door here is the last one on your right. There's a PHOTO on the counter, lots of creepy dolls, and a small locked box on the dresser. When you go back out into the hall, a horde of nurses will attack. And I mean a horde. Don't be afraid to pull out the shotgun here. They all came out of the room next door. There's SERUM on the counter and a SMALL KEY and a note on the medical table. Use that key to unlock the box in the previous room. Alex will faint yet again.