In the game Dark and Darker, Golden Keys are special items that are used to unlock certain doors or access hidden areas within the game. These keys are typically rare and valuable, making them sought after by players.

To progress through the game, players must explore the game world, solve puzzles, defeat enemies, or complete quests to obtain Golden Keys. Once acquired, players can use these keys to unlock locked doors, chests, or other objects that are otherwise inaccessible.

Golden Keys often provide access to valuable rewards such as powerful weapons, rare items, or additional gameplay content. They can be a key component in advancing the storyline or uncovering secrets within the game.

It's important to note that the specifics of Golden Keys in "Dark and Darker" may vary depending on the game's design and mechanics. It's always a good idea to consult the game's documentation or guides for more detailed information about how to obtain and use Golden Keys in the specific game you are playing.