Trusted Reviews has received a number of alleged development notes on Red Dead Redemption 2 that reveal gameplay details regarding missions, mechanics, online multiplayer modes, and story.
We first received the documents in August 2017, but decided not to share them, as they were unsubstantiated. Since then, a great deal of the information in the documents has been validated in Red Dead Redemption 2 promotional materials.
Two characters featured in the document, including main protagonist Arthur Morgan, were corroborated by official screenshots released by Rockstar. One character is Dutch Van Der Linde, leader of Dutch’s Gang, while the other appears to be Arthur Morgan.

Lets dive into the main points:

Online:

According to the notes, Red Dead Redemption 2’s online component will feature ‘Battle Royale’, ‘Revive and Survive’ and ‘Money Grab’ modes.
Battle Royal in a western scene is an awesome concept and we think this could be amazing in an open world like the rumoured Red Dead 2 map.
Revive and Survive pits two teams against each other as they try and stay alive. You’ll have a limited amount of time to revive your teammates before they are eliminated.
Finally, Money Grab features two teams fighting to procure bags of money in a central location. You’re expected to collect and return them to your base as quickly as possible.
The memo also states, much like GTA Online, players will be free to explore the open-world although it will supposedly provide far more depth than Rockstar’s previous online efforts. For example, NPCs will decorate storefronts with amenities and pack things away once night comes.

Gameplay

The memo received by Trusted Reviews touches upon several new mechanics that will be a part of Red Dead Redemption 2.
Throughout the open world, you’ll discover several locations including Armadillo and Ridgewood. These are populated with various NPCs including general store owners, gunsmiths and undertakers. You can also partake in gambling if you’re hoping to risk it all for financial gain.

A Slums Market will apparently be a method of procuring equipment at a reduced price. You can expect NPCs to be navigating these places in accordance with RDR 2’s day/night cycle, too.
Vehicles in the game will include minecarts, handcarts and horse-drawn carriages. These come in different variants such as armoured and fast ones, although we’re unsure if you can customise them yourself.
The document hints at railway trains being available as modes of transport across the open world. In addition, they’ll be fully explorable with unique inhabitants and dialogue.

Aside from the solo campaign, details of which we won’t spoil, side activities will also be available.
Horsemanship challenges can be completed to increase your rider rank while dozens of different fish can be captured across the world.
Plants and herbs can be gathered for crafting purposes, with the document listing types including Clamshell, Ghost, Night Scented, Rat Tail and Spider Orchids.

The original leak from Trusted Reviews contains a few more details, we recommend checking them all out here: http://www.trustedreviews.com/news/red-dead-redemption-2-leak-reveals-battle-royale-first-person-more-3388634