Full list of all 51 Red Dead Redemption 2 achievements worth 1,000 gamerscore. It takes around 200-300 hours to unlock all of the achievements on Xbox One.
You attained 100% completion.
You skinned every species of animal in Story Mode.
You studied every animal across all states in Story Mode.
You found a permanent home for the squirrel statue.
You found the graves of each of your fallen companions.
You completed the Epilogue.
You survived 18 bear attacks and killed the bear each time in Story Mode.
You completed 'A New Jerusalem'.
You completed 'Red Dead Redemption'.
You completed all optional Honor story missions.
You earned 70 Gold Medals in Story missions.
You completed 'Goodbye, Dear Friend'.
Red Dead Online: You reached Rank 50.
You completed one of the Collectable strands.
You reached maximum or minimum Honor level.
You completed Chapter 5.
You completed Chapter 4.
You completed 10 Stranger mission strands.
Red Dead Online: You achieved MVP 3 times (in a round with at least 4 players).
You discovered the fate of Marko Dragic.
You completed a Companion Activity in each camp.
You spent $5000 across all shops.
You recovered the stash from 4 homesteads.
You completed Chapter 3.
Red Dead Online: You formed a Persistent Posse.
Red Dead Online: You concurrently owned 5 horses.
Red Dead Online: You purchased 5 camp improvements.
Red Dead Online: You crafted 25 pieces of ammunition.
You delivered 5 camp companion item requests.
You survived for 3 days holding a bounty of $250 in all states.
You crafted 30 unique items in Story Mode.
You caught a fish weighing at least 16 lbs (7.3 kg).
Red Dead Online: You completed a Free Roam mission as part of a Posse with at least 2 members.
You played all mini games.
Red Dead Online: You crafted 20 items (excluding ammo).
Red Dead Online: You achieved 5 gold belt buckles from awards.
Red Dead Online: You played 5 Free Roam Events.
Red Dead Online: You played 10 Free Roam missions.
Red Dead Online: You sold 20 items to the Butcher.
Red Dead Online: You successfully countered a rival Posse's Free Roam mission.
Red Dead Online: You took part in a Series.
Red Dead Online: You reached Rank 10.
Red Dead Online: You picked 25 Herbs.
You completed Chapter 2.
Red Dead Online: You completed the Intro.
You robbed or looted $250.
You reached max bonding level with a horse.
You upgraded each available component for a single sidearm or longarm weapon.
You donated $250 to the gang tithing box.
You completed Chapter 1.
You completed 'Enter, Pursued by a Memory'.