I left the Town Center and headed up past the police station, which was the only way to the hospital that wasn't destroyed. The road seemed to be made out of a kind of mesh-like material and all the buildings seemed to be ancient and decaying. I also noticed that the monsters, while of the same species as the ones before, looked slightly different. The dogs seemed bigger, yet skinnier and the birds had longer necks and bigger wings.
When I got to the hospital, and found Lisa, she said that she was scared to be left alone. I asked her how to get to the lake, and she told me what I already knew: that I'd have to take Bachman Road. I told her about the road being blocked and Lisa said that was the only way out there. Then she remembered that there might be a way through the old waterworks near the elementary school. When I said that I was going to try it, she begged me not to leave her alone, so I offered to take her with me. She told me that somehow she didn't think that she was supposed to leave the hospital, and I told her that I would be back as soon as I'd found Cheryl.
When I went out of the hospital gate, the geography had changed yet again, and there was now only one road I could take, which led me to a stairway going up the side of a building. When I reached the top, I found what looked like a giant moth. It almost seemed to be waiting for me. I used the fire hammer I'd found in the hospital to wound the creature, because I was worried about using up all the ammo. I had a feeling I'd need it before the end. I don't think I was really hurting the creature at all, and when the siren rang again the creature just faded away into the mist.
When I came down from the roof, everything was back to some semblance of normality. I made my way back through the streets to the old waterworks. When I'd got there and broken the lock on the gate, I took a look around to make sure that noting nasty was going to follow me, and then I descended into the sewers.