Had to install directmusic using protontricks to enable background music

Follow these steps to get it running nicely on the Deck:

1. Install the game
2. Go to "Manage" -> "Properties" -> "Beta" and select "workshop beta"
3. Install this mod collection: https://steamcommunity.com/sharedfiles/filedetails/?id=2899031562

• Feel free to experiment with other mods as needed, for example by using a texture mod

4. Open up a console and execute: protontricks 39510 directmusic
5. • Open up a texteditor and find the following file: /home/deck/.steam/steam/steamapps/compatdata/39510/pfx/user.reg

• Find the section called [Software\Wine\DllOverrides] and do the following two steps:
  • add line (necessary for D3D11): "ddraw"="native,builtin"
  • delete line: "*dsound"="native" (if this line is not present, directmusic was not properly installed and you should try step 4 again!)
• Save the file

6. In Steam overlay, select Gamepad as the control scheme and map the escape key to a rear button to skip startup videos. There probably also is a config setting to do this.

The game should run now with working background music. If music is not present, you're missing directmusic! Try step 4 again and check if entries regarding dmusic start appearing in the user.reg file from step 5.