Without tinkering, the game starts up and stays in black screen, making the game unplayable.

Like with the PC reports for Linux, you need to install d3dcompiler_46. You should be able to do the following to fix the issue:

• Install the game through Steam
• Go to Desktop mode and make sure you have Protontricks installed thru the Discover app
• Run Protontricks
• At the "Select Steam App" screen, select Raiden Legacy and click OK
• It may take a few seconds for the next screen to come up.
• You may or may not see popups about winetricks. Just click OK for those popups.
• It may take another few seconds for the next screen to come up.
• Make sure the radio is set to "Select the default wineprefix" and click "OK"
• On the next screen, make sure the radio is set to "Install a Windows DLL or component" and click "OK"
• On the next screen, select d3dcompiler_46 and click "OK"
• It may take another few seconds for the next screen. When the next screen shows up, click "Cancel"
• Then "Cancel" again at the next screen to exit Protontricks

You should now be able to play the game in Desktop or Gaming mode without having to pick compatibility mode. If you are using an external controller (such as a PS4 controller), you may have to change your controlleeer layout to match the keys of the game.