'Everybody's Gone to the Rapture' features a set of achievements/trophies that encourage thorough exploration and interaction with all narrative elements. Many achievements are tied to completing each character's story arc, while others require finding all radios, phones, or specific hidden light anomalies.
To unlock all achievements, you'll need to be exceptionally thorough. This means interacting with every single glowing object, listening to every radio and phone, and exploring every accessible nook and cranny of Yaughton. Some achievements are for simply completing the game, while others require a dedicated effort to uncover every secret. Consult an achievement guide if you're struggling to find specific collectibles.