According to the notes, Red Dead Redemption 2’s online component will feature ‘Battle Royale’, ‘Revive and Survive’ and ‘Money Grab’ modes.
Red Dead Redemption 2 will allow you to play both the main campaign and multiplayer in first-person. The document states the game will have bespoke animations to fit the style.
Specific player actions during campaign missions will lead to events unfolding differently depending on which characters you interact with. This could lead to different mission outcomes, objectives and dialogue depending on how you behave morally in each playthrough.