Import Project
After you downloaded the project press Import button.
The project is fully configured, you don't need to make any configurations after importing.
Note
Project Settings will be overrided (Tags and Layers)
It is possible for Unity to offer you automatic download of dependencies (ProBuilder). Aurora FPS was used ProBuilder to create a demo scene, you can refuse to download it or delete it later.
Demo Scene
For open demo scene go to path: Assets/Aurora FPS/Base Content/Scenes/Base Demo/Base Demo Scene