This page in our guide to Metro Exodus focuses on the Fall chapter. Artyom and the rest of the crew try to figure out how to save Anna - her health is declining rapidly.
Speak with Anna first. She is in a very bad condition - the woman needs help. Walk around the Aurora - listen to the conversations or read Artyom's journal. You can also meet with Alyosha - depending on how the previous chapter has ended, the man's health status will differ.
Go to Miller. You learn about a dangerous plan to reach Novosibirsk, the Dead City. The place is supposed to have a lot of experimental medicines. When you are ready, go to the map and start the final chapter of Metro Exodus.