@hajnal-endot If there is a Proton version that works with the game on your setup, please let me know. I tried to reproduce your error, but the game is working for me on a very similar setup :/
Gonna add my own. # Compatibility Report - Name of the game with compatibility issues: Samurai Shodown - Steam AppID of the game: 1342260 - Driver/LLVM version: Mesa 23.1.2, LLVM 15.0.7 - Kernel version: 6.3.8-arch1-1 - ...