Spoiler!
This game is really lovely. It takes many hours to finish and sadly there is no option to save it in between. Only way to pause is to keep it running in the background. I would love to know more about how the windmills and berry bushes affect the game. I mainly focused on one campfire, because at some point a blue diamond is needed, which is hard to get. But only one is needed to complete the game. After the two final glowing stages of the fire, you win. I thought that the fire would light the whole map, but nothing really changes, there are still a lot of unlit places. That was a little disappointing. If you want you can keep playing after winning.