

Fullscreen could not be initiated with Proton Experimental,you have to use GE proton to get in fullscreen.

With normal proton or even experimental the transition videos don't work, it doesn't ruin the experience or anything and the games runs great. If you want the transition videos just getting GE will fix it.

Fixes test pattern in VHS flicker clip

Used Proton 6.3-7
I did notice an issue where you get a coloured screen a few times but after looking at a play through online I can say this was a video codec issue with Wine and all you missed was a fuzzy screen that served as a transition.

Would error on startup with "Failed to initialize player
Failed to initialize graphics. Make sure you have DirectX 11 installed, have up to date drivers for your graphics card and have not disabled 3D acceleration in display settings. InitializeEngineGraphics failed"
Easily fixed by changing launch command to "PROTON_USE_WINED3D=1 %command%"

Worked perfectly with no tweaks needed. Played through entire game (it's short).

Working perfectly out of the box.