If you're having issues such as a popup relating to Vulkan or the game simply doesn't load in, try doing this:
Open CMD on the file path where the Buckshot Roulette file is, after doing so type the following: "Buckshot Roulette.exe" --rendering-driver opengl3 (Should look something like this: 
After pressing Enter on your keyboard it will launch the game. This switches the rendering driver making it work on even the oldest of computers, have fun!