Steam trys to install "dxwebsetup.exe, dotNetFx35setup.exe, vcredist_x86.exe" everytime i start the game, and this fails.
Me guess, because they are web installers?
so i did this:
protontricks -c "mv Win32Libs/dotNetFx35setup.exe Win32Libs/dotNetFx35setup.exe.bak" 217790
protontricks -c "mv Win32Libs/dxwebsetup.exe Win32Libs/dxwebsetup.exe.bak" 217790
protontricks -c "mv Win32Libs/vcredist_x86.exe Win32Libs/vcredist_x86.exe.bak" 217790
protontricks 217790 d3dx9 dotnet35 vcrun2008
and now the game starts.
my test to install the provided deps:
protontricks -c "Win32Libs/dxwebsetup.exe" 217790, LOG: protontricks_dxwebsetup.exe.log
protontricks -c "Win32Libs/dotNetFx35setup.exe" 217790, LOG: protontricks_Win32Libs_dotNetFx35setup.exe.log
protontricks -c "Win32Libs/vcredist_x86.exe" 217790, LOG: protontricks_Win32Libs_vcredist_x86.exe.log
didn't worked.
Just noting these issues seem to be still present for Proton 6.3.
Still an issue with current proton experimental:

No apparent improvement with Proton 7.0-1.
Just retried with proton experimental and its working now! Can't see any issues, cut scenes working.
Just retried with proton experimental and its working now! Can't see any issues, cut scenes working.
Yes, i can confirm. Works with experimental-8.0-20240205 fine.
I hadn't checked this for a long time, presumably those fixes in Experimental have propagated to the main Proton releases - I just tried in vanilla Proton 9.0-2 and it now runs. But bizarrely, even though English is selected in the options/launcher, it seems to only show Italian text (at a guess) in the game itself and there doesn't appear to be any language options inside the game.
Tried in Proton Experimental, and the menu is in English, but there seem to be rendering glitches.
I worked around the language issue by changing and saving the language selection in the options program. Don't know if the update to Proton 9.0-4 made any difference here.
proton 9.0-4x1 2024-12proton experimentalx4 2024-12proton 9.0-2x1 2024-09proton 7.0-1x1 2022-02proton 5.0-10bx1 2022-01proton 5.0-7x1 2022-01proton 6.3-8cx1 2022-01proton 6.3x1 2021-07
Compatibility Report
System Information
I confirm:
Symptoms
Reproduction
But everytime i try to start the game, the Window "Performing first time setup ..." appears. Same for "Dogfight 1942 Options"
Logs
noenv: steam-217790.log
nofsync: steam-217790_nofsync.log
noesync: steam-217790_noesync.log
wined3d: steam-217790_wined3d.log
noforcelgadd: steam-217790_noforcelgadd.log