The game is not playing any voice audio, only music and sound effects. I'm willing to say this may be user error, however, given that much of the ingame settings are invisible.

I'm still getting the green texture issue even on the latest version of Proton. The main menu, settings menu, and pause menus are all flat bright green, excepting a few of the clickable words. Achievement notifications, e-ticket pickups, and the cursor are all bright green boxes while in game.