I can confirm the videos do not work (just a black screen but you can hear audio). Other than that the game is playable, I have also tried GE-Proton8-31 but it makes no difference.
(Additionally I have noted that the first time I tested this game one some old Proton version, I had to force resolution with a launch option -windowed x=640 y=480 so there might be/or was some issue with initial resolution detection too)
The videos are using Bink codec according to ffprobe and they play with VLC, here is probe of the INTRO.bik file:
ffprobe.txt
Including logs doing these steps to get into gameplay:
steam-259190-GE-Proton8-31.log
steam-259190-proton-8.0-5c.log
system_info.txt
Still having this issue as of December 2025, tried many different resolutions with the -windows x=number y=number to no avail. Tried Proton 8, 10, experimental and even some GE versions removing the prefix between attempts, and nothing. The symptom is the same, a black window appears and plays some sounds for about 30 seconds, then closes and the game exits/crashes.
ge-proton8-31x1 2024-02proton 8.0-5cx1 2024-02
Compatibility Report
System Information
I confirm:
steam-259190.log
Symptoms
Cut-scenes don't play. It's just a black screen where the cut-scenes should be.
Reproduction
Start the game.