How do you get the silver key in Gravity Falls pinesquest?

To obtain the silver key in Gravity Falls: Pinesquest, you need to first complete specific tasks and puzzles in the game. Look for clues that lead you to hidden areas where the key might be located. Interacting with various objects and characters can also provide hints on where to find it. Once you gather the necessary items or solve the puzzles, you'll unlock the silver key.