Multiplayer Mod?

[Archimedes5000]

Is there a MOD where you can fight other players?
Either a single match where you pick your heroes and trinkets or a quest where you fight another player with heroes from your campaign roster, or just any PvP interaction

THERE IS ONE THAT IS NOT A MOD but a whole DD recreated in Unity (nearly) perfectly (campaign is blocked but it exists): https://www.reddit.com/r/darkestdungeon/comments/5eue4a/darkest_dungeon_multiplayer_on_pcandroid/

[Big Pharma]

The closest thing I can think of is the "Fallen Heroes" mod from the workshop.