A funny gaem.
Make sure that vcvarsall is in your PATH, or use Developer Command Prompt x64, and just call build.bat.
The project is using emscriptem to compile to webasm, just make sure that emsdk is in your PATH and call build_web.bat. To run the game you can call command 'emrun web_build/index.html'.
If you are using Linux you can probably figure it out :>