Due Process from developer Giant Enemy Crab uses Easy Anti-Cheat that previously blocked Linux (and so Steam Deck too), but they've now enabled Linux players to jump in.
Looked into it, looks like a great game for a killer price, but a tactical r6-like game is dependent on a team...
Unless there is bot support this game is already dead in the water with its super low player count.
And i didnt see bot support listed anywhere.
Lan support would be nice but getting 10 people to play lan with you on this game would be impossible.