What a nice review! The locations of the 5 dolls are: behind factory, in a lamplight in the runner's street, top of the wooden planks at the cabin, where the girl is after she dissapears, where the guy looking for the phone is after he leaves. The 5 dolls is just an easter egg, you need to interact with the characters and follow the story to get to the actual ending. If you ever revisit the game, let me know!