Guys, I'm running Windows 10 x64, v1903, build 18362.86 and the game runs fine here with no extra files at all, and runs great on my AMD RX-590 with the latest Windows 10 WDDM 2.5 drivers, the Adrenalin 19.4.3 drivers. No problems.

I did have to set compatibility mode for the soulbringer.exe to Win95. (But nothing else in any further compatibility settings.)

Also, I found that it was necessary to select 16-bits (I'm running in 1280x1024x16) in the game's video settings panel popup, along with any of the available DX7 settings (Mine is set for DX73D T&L HAL.) Windows itself does not have to be in 16-bit mode--just the game itself.

Hope this helps...