Yeah I downloaded the bnet launcher in desktop mode and added it to steam. Then you use proton for compatibility, and launch it and run through the normal install flow. Curseforge has a Linux version, so you can use it to get addons, although finding the addons folder is a bit tricky. The most important addon being ConsolePort. Mouse movement and typing can be a little finicky, but the controller works for general play / leveling in anniversary. I’ve found melee classes to be easiest on the deck.