Sorry for asking this, where did you find the DLLs from .NET or where is it located when it is installed? And also what DLLs are required?

bless u my son. didnt work at first but thats cause i had it running off an sd card, moving it to system memory worked just fine with this trick.

Got this running, though there were a couple odd issues along the way. Noting it here for anyone else:

- I made the mistake of running the game's exe in Windows and then transferring that whole folder to my Deck. I believe the game does a compilation process when you launch it on Windows, so it'll clear out files from the content folders, meaning it won't be able to find those files when you run it from Proton and it'll throw up a missing files error on launch. Use a fresh version of the extracted folder

- For whatever reason, the game launched with the sound muted for me. If this happens, just right-click the application in the taskbar and adjust the audio

Thanks for the instructions, by the way.

How do you do this?? I added the .net 6.0 through ProtonTricks, but then it just asks for missing .net Frameworks without giving a version number, and when I try to download those, it just instantly closes

ok so following your instructions to the letter worked while protontricks .net download didn't.... lol

Can confirm it works.
I'm using Pop_Os though. But I'll try later on my Steam Deck and report back.