You could try out something I whipped up for this and see if it works for you: https://github.com/MattMckenzy/ToothPick

I managed to get the game’s textures working well through Lutris with this script I found!

https://gist.github.com/baryluk/1041204eff4cc4fad6f1508afe67b562

It’ll compile and install latest mesa, just make sure you add the wrapper script to the command in the lutris config for the launcher and it should work great.

Managed to make it work first try with this script on my KDE plasma/debian testing setup after wrestling with the textures issue for several days.