Use the VsDevCmd.bat with -arch=x64.
git clone --recursive -j8 https://github.com/marcgpuig/Andes.git
cd Andes && mkdir build && cd build
cmake -G "NMake Makefiles" ..
nmake && .\Andes.exe
-j8 will only work with version 1.9 or later of Git
If you already cloned the repo:
cd Andes
git submodule update --init --recursive
mkdir build && cd build
cmake -G "NMake Makefiles" ..
nmake && .\Andes.exe