How do I unlock the “betray Sadie” ending in Red Dead Redemption 2?

To unlock the "betray Sadie" ending in Red Dead Redemption 2, you must make specific choices during the game''s final chapters. This ending is part of the game''s multiple narrative outcomes, which are determined by your honor level and decisions made during key missions. The "betray Sadie" ending occurs if you choose to help John Marston escape instead of returning to help Sadie Adler and Abigail during the mission "Red Dead Redemption."\n\nTo achieve this ending, you must first progress through the main story until Chapter 6. During this chapter, Arthur Morgan''s health deteriorates due to his tuberculosis, and the gang''s situation becomes increasingly dire. Your honor level will play a significant role in shaping the ending, but for this specific outcome, you do not need to focus on maintaining high or low honor. Instead, the critical decision comes during the mission "Red Dead Redemption."\n\nIn the mission "Red Dead Redemption," Arthur is faced with a choice: help John Marston escape or return to camp to assist Sadie and Abigail. To unlock the "betray Sadie" ending, you must choose to help John. This decision leads Arthur to accompany John as they flee from Pinkerton agents and Micah Bell. During this sequence, Arthur sacrifices himself to ensure John''s survival, which is a pivotal moment in the game''s narrative.\n\nAfter helping John escape, Arthur will not return to camp, and Sadie and Abigail will be left to fend for themselves. This choice results in a bittersweet ending where Arthur''s loyalty to John is highlighted, but at the cost of abandoning Sadie and Abigail. The game''s narrative will reflect this decision, and you will experience the consequences of your actions in the epilogue.\n\nTo ensure you unlock this ending, pay close attention to the dialogue and mission prompts during "Red Dead Redemption." When given the option, select the path that involves helping John. This will trigger the sequence where Arthur and John work together to escape, ultimately leading to Arthur''s sacrifice. It''s important to note that this ending is one of several possible outcomes, and your overall honor level will influence other aspects of the story.\n\nFor players who want to experience all endings, it''s recommended to save your game before starting the mission "Red Dead Redemption." This allows you to replay the mission and make different choices to see how the story unfolds. Additionally, consider exploring the game''s honor system, as it adds depth to the narrative and affects Arthur''s interactions with other characters.\n\nIn summary, the "betray Sadie" ending is unlocked by choosing to help John Marston escape during the mission "Red Dead Redemption." This decision leads to Arthur''s sacrifice and leaves Sadie and Abigail to face their challenges alone. By understanding the game''s mechanics and making deliberate choices, you can experience this poignant conclusion to Arthur Morgan''s story.