Audio Diaries are scattered throughout Rapture, offering invaluable insights into the city's history, the lives of its inhabitants, and the events leading up to its downfall. Collecting them provides a deeper understanding of the lore and often reveals hidden paths or clues for puzzles. There are over 100 audio diaries in BioShock 2. While not essential for completing the main story, they are highly recommended for players who enjoy narrative depth. Many are found in plain sight, but some are cleverly hidden in obscure corners, behind locked doors, or in areas requiring specific Plasmids to access. Listen to them carefully, as they often contain hints about the environment or upcoming challenges.
