While Until Dawn has many branching paths, this guide will focus on taking you to the best possible ending, as well as finding all collectibles. For any of the game's bad endings, simply do the opposite of what is recommended in this guide. Consequences of alternate options will also be listed in order to ensure informed decisions. When neither choice has a great impact on story progression, the consequences of both will be listed so that you may obtain the outcome that you prefer.
After beating the game once, episode mode will be unlocked. This allows you to restart the story from any chapter in order to view the outcomes of alternate actions and gather any missing collectibles, though any choices made before then remain the same.
To begin the story, head to the prologue.