I also had constan crash when starting the game.
I first had the missing error of the dll file OpenAL32.dll, and had downloaded the file, but this did just exit the game upon load.
I then found this installer which fixed it for me. workis in both win7 and win10
https://openal.org/downloads/oalinst.zip
So install this and just edit the ini line33 file where your game sits and yo sould be good :D
#StartIn = E:\GAMES\PC Games\Mad.Bullets\bin_x86\Launcher.exe
is how mine looks :D