How do I complete the "American Dreams" stranger mission?

The ''American Dreams'' stranger mission in Red Dead Redemption 2 is a unique and eerie side quest that involves investigating a series of gruesome murders. This mission becomes available in Chapter 2 and can be found in the northeastern part of the map, near the town of Valentine. To start the mission, head to the area marked with a question mark on your map, located near the Dakota River. You will find a bloodstained note pinned to a tree, which serves as the first clue.\n\nOnce you pick up the note, the mission officially begins. The note contains cryptic hints about the location of the next clue. Follow the instructions to the next marked location, which is a small cabin near the river. Inside the cabin, you will find another note and a mutilated corpse. This pattern continues as you follow the trail of clues, each leading to a new location with more disturbing discoveries. The mission requires careful exploration and attention to detail, as the clues are not always straightforward.\n\nOne of the key gameplay mechanics in this mission is the use of Arthur''s journal. After finding each clue, Arthur will automatically update his journal with sketches and notes that help you piece together the mystery. Pay close attention to these entries, as they often contain subtle hints about where to go next. For example, one clue might reference a specific landmark or geographical feature, such as a rock formation or a particular tree. Use your map and the in-game compass to navigate to these locations.\n\nAs you progress, you will eventually encounter the serial killer himself. This confrontation takes place in a secluded cave near the Elysian Pool, east of Annesburg. The killer will attempt to ambush you, so be prepared for a fight. Use Dead Eye to target him quickly and efficiently, as he is armed and dangerous. After defeating him, you can loot his body for a unique item: a map that leads to a hidden treasure. This treasure includes a significant amount of cash and other valuable items, making the mission well worth the effort.\n\nCommon challenges during this mission include locating the clues and navigating the often treacherous terrain. If you find yourself stuck, try using Eagle Eye to highlight interactive objects, such as notes or bloodstains, that might be easy to miss. Additionally, make sure to bring plenty of ammunition and healing items, as the final confrontation can be intense. For new players, it is recommended to save your game before entering the cave, just in case things go south.\n\nPractical tips for completing ''American Dreams'' include taking your time to explore each location thoroughly. Rushing through the mission might cause you to miss important clues or overlook valuable loot. Also, consider using a horse with high stamina and health, as you will be traveling long distances across rough terrain. Finally, keep an eye out for environmental storytelling, as the mission is rich with details that add depth to the narrative. By following these steps and tips, you can successfully complete the ''American Dreams'' stranger mission and uncover the dark secrets of the serial killer.