after downloading the zip files you need to:

--> Extract the zip files in the same folder.

--> Open the blend file and press render :D.

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I used E-cycles and Scatter addon, but if you don't have they you can open without any type of problem this project in standard blender :D

My system has:
- GTX 1060 6 GB
- i7 4790
- 16 GB of RAM

Scene samples and time using my graphic card.
- Samples --> 512- Regular time --> between 15 - 20 minutes.