It's still a bit buggy, but it's something.
Sekiro Online
An unofficial mod to adds souls-style PvP and co-operative play to Sekiro.
www.nexusmods.com
Features/Details:
- Support for up to 6 players (1 host + 5 phantoms)
- PvP - Make use of your prosthetic tools and combat arts to defeat your opponents, grapple through the world and snipe each other out of the air.
- Co-op - Play through the game with friends, approach enemies and bosses with a different style and finally beat the game as the summoner class.
- Invasions - Enter an unsuspecting person's world as a spirit of vengeance, and fight to the death.
- Simplified matchmaking - Invaders and phantoms will always be adjusted to the player's local level, to try and increase the available player pool. For example if you have 40 attack power, and your opponent has 1 attack power, they will hit you as if they have 40 and you'll hit them as if you have 1.
- You can't pause the game.