DXVK is not "Proton's fixes". It exists as a separate entity whose development Valve has helped fund and who Valve devs have directly contributed to.
Proton's fixes are out-of-tree tweaks to DXVK, Wine and VKD3D that, put together, make games work much more seamlessly and smoothly than they otherwise would.
Looks like it used to have a console version called Killer Queen Black but it was de-listed due to the hosting server shutting down. That'd be your most likely avenue of finding a way to play it single player. Either that or finding an open source project
I used to use Lutris, but I found Heroic more consistent and convenient for filling the same purpose. It's quite good at downloading just the diff needed for GoG game updates these days, for instance, which is key for big games like Baldur's Gate 3.
Agreed. Proton is important as a bit of an "iPhone moment" where all this tech comes together in a way where non-techies "get it" in the sense where they understand why it's useful, even if they'll never bother to learn the details of why or how.
Proton is Wine plus DXVK and VKD3D, as well as a big pile of little tweaks and out of tree changes that Valve maintains to specifically maximize game compatibility and performance.
Proton uses Wine, which is a Windows system call API translation layer for Linux. In other words, it translates commands for the Windows kernel into calls for the Linux kernel.
So it's kind of an emulator and kind of not, but regardless the metaphor of a translator is fine. As a lightweight translator, you might say it's like using Google Translate on your phone to translate back and forth quickly and automatically, rather than having a person in the middle who needs to think about it.
It's phenomenal, IMO. It cuts back and forth between action scenes and a philosophical dialogue between a human and a superintelligent AI he created