When cloning the repositor make sure to use the line below to get all the submodules.
git clone --recursive https://github.com/TomyBDev/Mizu
To generate all the files required for running the code yourself, you can run "GenerateProjects.bat" found in the root directory. This will run a python script to install premake to run the premake file.
If that doesn't work just go to https://premake.github.io and download premake and put the premake5.exe in /vendor/bin/premake/ then run GenWin.bat in scripts.