Two instances I can think of 1. You save the Devil Girl she says you can find her later on somewhere...I don't recall exactly where she said you can find her. 2. If you manage to save the couple of archer dudes that are getting wrecked by the wolf apocalypse then they give you a secret message on a place you can go to meet them later.
Based on those two scenarios alone if everyone dies. Then I'm almost positive we will have access to more friends in the future should our current ones die.
If It is the "archer dudes" that I think your talking about, with all the fire and hyenas, there camp is already in ACT I My Hint is thats its around the burning town
