Avowed: A Solo Fantasy Adventure – No Multiplayer Here
While Avowed has been compared to Skyrim, its gameplay is closer to Obsidian's The Outer Worlds – a single-player experience. This means there's no multiplayer functionality, dispelling any rumors of co-op or PvP modes. You'll have companions, but they're all non-player characters (NPCs). Enemy encounters will also be solely against AI-controlled opponents. There are no plans for future multiplayer additions, such as invasion modes or co-op.
Initially, Obsidian Entertainment did intend to include co-op, even using it as a marketing tool. However, this feature was cut during development due to the team's focus shifting. While a co-op mod for PC is theoretically possible, none have yet emerged, and its creation would be a significant undertaking. Furthermore, Obsidian has confirmed no future plans to implement multiplayer.
Therefore, the definitive answer is no; Avowed does not offer any form of multiplayer support.