You can also find there a link to the Godot 3.1 alpha version that you will need to run the project.

For downloading it you need to clone the project using git, but you have to download the Git LFS for large files.
https://git-lfs.github.com/

After that you can import the project and I show you some gameplay and starting points.

See my social profiles here
G+: https://plus.google.com/+JayAnAm
Twitter: https://twitter.com/jayanamgames
Facebook: https://www.facebook.com/jayanamgames
Patreon: https://www.patreon.com/jayanam

Production Music courtesy of Epidemic Sound: http://www.epidemicsound.com