Which missions do I have to finish so that I can do all actions in the open world of Red Dead Redemption 2?

CHAPTER 1: Colter

  • Dutch van der Linde (automatically after Who the Hell is Leviticus Cornwall?) - Eastward Bound - Unlocks the open world

CHAPTER 2: Horseshoe Overlook

  • Hosea Matthews - Exit Pursued by a Bruised Ego - Unlocks Horse Brush and the Legendary Animals map
  • Leopold Strauss - Money Lending and Other Sins - Unlocks Ledger and Camp Upgrades
  • Hosea Matthews - The Spines of America - Unlocks Fence to sell Gold Bars
  • Abigail Marston - A Fisher of Men - Unlocks Fishing and Fishing Pole
  • Dutch Van Der Linde - A Strange Kindness - Gives you a Gold Bar

CHAPTER 3: Clemens Point

  • John Marston - Horse Flesh for Dinner - Unlocks Horse Fence
  • Hosea Matthews - The Fine Joys of Tobacco - Makes Fire Bottles purchasable at fences
  • Dutch Van Der Linde (automatically after Blood Feuds, Ancient and Modern) - The Battle of Shady Belle - Unlocks Chapter 4, and better horses at Scarlett Meadows Stable and Saint Denis Stable

CHAPTER 4: Saint Denis

  • Dutch van der Linde - Urban Pleasures - Improved Dead-Eye skill

EPILOGUE 1: Pronghorn Ranch

  • Abigail Marston (automatically after Fatherhood, For Idiots) - Motherhood - You get access to Arthur's weapons and items after this mission.

OTHER

  • Curtis Malloy, sheriff of Valentine - Unlock bounties