Overview per Alex840 at Resetera.
Miscellaneous
- Entirely playable in 1st person mode.
- Customisable HUD.
- Each character will have different sets of clothes to coincide with weather conditions.
- Like the first game you have a range of choices, and your decision affects your honor meter.
- When hunting, you can sell the carcass or take it to the butchers for meat. If you leave it too long, it'll rot.
- Your camp will not wait for you. Members of your gang who reside at camp will come and go, and finding out where exactly they've gone from others will be the basis of a number of quests and side quests.
- If you hold the trackpad to turn on the cinematic camera you can set a waypoint and hold X and your horse will automatically make its way to the destination.
- As you skin an animal, you can see where the exit wounds are.
- You can pet dogs. Those dogs won’t bark at you again if you see them.
- You can buy newspapers which will cover events that occur throughout the story.
Weapons and Gunplay
- You can physically see all your weapons on Arthur's character model. You can hold only hold two sidearms and two long weapons (along with a knife, lasso, and throwables).
- Gun customisation, such as engravings.
- Dead Eye now has 5 levels, Level 1 allows for slowdown, Level 2 allows you to paint targets and unleash a barrage of shots, and Level 3 allows you to manually pick your shooting points, etc.
- It's possible to shoot weapons out of enemy hands.
- Weapons get dirty and clogged up over time, or if you get them wet, so you’ll need to clean them to get the best performance.
- If you double-tap L1 Arthur puts his gun away with a flourish.
Arthur
- Beard grows over time, but you can shave.
- Clothing customisations go as far as allowing layering and minor adjustments, like the option to roll up your sleeves.
- You get hungry over time, but you can get fat if you eat too much, effecting stamina.
- Stats like stamina can be raised by doing physical activities (such as in GTA V or Bethesda RPG's).
- Snow on Arthur’s clothing will eventually melt. Mud will harden and wipe away. Blood will dry.
- You can swim (just about).
- Putting on a bandana during a crime and then taking it off afterwards makes the Wanted meter drop faster.
- You can pay your own bounty, but townspeople will still remember any trouble you caused and comment on it when you return.
- Arthur can look at his reflection in the mirror and will comment on what he sees.
Horse
- The whistle command button can be held down and Arthur will whistle until he runs out of breath.
- Visit Stables to customise your horse, switching out its saddle, blanket, stirrups, reins and saddle horn.
- You can name your horse.
- You can clean your horse.
- Horses poop dynamically.
- If your horse dies, it’s gone forever.
- You can tell your horse to flee when it’s in a precarious situation to try to spare its life.
- Horse testicles shrink depending on the in-game weather.
