Firewatch has one of the smallest but easiest trophy lists of any game on PSN. The list features just five trophies, made up of one bronze, one silver, and 3 golds and to get all of them, all you need to do is finish the game that takes roughly three hours. The description of each trophy says: “complete day ?” which act as a chapter in the story. The rarest trophy in the game is at 62.8% achievement rate on PlayStation 4, which shows how simple this trophy list is.
Recently, Campo Santo added some extra bronze trophies that require you to find items or do specific things in the game world that flesh out the experience slightly. It is best to return to the game after you have completed it for the first time to unlock the added trophies to maintain the 100% completion statistic.