Instructions for Windows - ntut-rf/mcu GitHub Wiki
GNU ARM Toolchain
Download & Install GNU ARM Toolchain
Drivers for the on-board debugger
STM32 -- ST-Link
Download and install from the ST Website here
MSYS2
Download & Install MSYS2:

Change the system PATH
a. Type "path" in Windows search, and open "Edit the system environment variables"

b. Open "Environment Variables"
c. Click on "Path" and press "Edit"

d. Add C:\msys64\usr\bin
and C:\msys64\mingw64\bin
and C:\Program Files (x86)\GNU Tools ARM Embedded\7 2017-q4-major\bin

GNU Utilities
Open the terminal, and
$ pacman -S make
OpenOCD
Open the terminal, and
$ pacman -S mingw-w64-x86_64-openocd
Git
Download and install Git for Windows