Hello, Here is how to play Heavens Burn Red on the Linux Version of Steam.

Go to https://heavenburnsred.yo-star.com/ and download the win client version.

Open Steam> Games tab > Add non_Steam game> Find the downloaded win client version > Select the file HeavenBurnsRed_Gamelauncher-1.4.1-setup.exe and add to steam by clicking on add selected program.

For me it was in my downloads folder.

Click on the game in the steam library menu >Properties > Compatibility > Click on For use use of a specific Steam Play compatibility tool >
Select GE_Proton latest version (10-10 as of writing this ).
If the launcher is struggling to install please do the following.
Then go to Shortcut tab >Launch options and type copy the following SteamDeck=1 %command% into it.
You can also change the game name and game background to what you want.

To get GE-Proton > Go to Software Manager > Search Proton> Click on ProtonUP-QT and install.

Click on play on Heavens Burn Red, Install the game and it should begin downloading the game for you.
Once it has downloaded and 100% verifiedm > Start game > Options > Download all.
When the download is done, You can login and enjoy the game.

Special thanks to VinegarLove in the HBR community for their help with questions when I was testing ,Making this guide and the creators of GE-Proton.
I've added screenshots below to help as a visual aid.

Best of luck with your summons and I hope you can enjoy the game.


Edit: Thanks for all the feedback on Discord, Glad it's helping others.