This was made for a game jam. The code is janky. I don't recommend using it.
You'll need to install Make for Windows and Microsoft Visual Studio 2019.
Download the latest Windows binaries for GLEW and SDL2. Note that SDL2 supplies both runtime and development binaries. You'll want the development binaries. Extract the downloaded libraries and copy their contents to the lib folder of the repository. You should end up with something like this:
Kowloon/lib/LIBRARIES.md
Kowloon/lib/glew-2.1.0/...
Kowloon/lib/SDL2-2.0.12/...
Build the program by calling
make exe
The executable can be found here:
Kowloon/bin/Kowloon.exe