Part One
Part Two
Part Three
Part Four
Part Five
Part Six
Part Seven
Part Eight
Part Nine
Part Ten
Part Eleven
Part Tewlve
Part Thirteen
Part Fourteen
Part Fifteen

Overall, this is a very engaging tutorial to follow. The zip file is extremely helpful. When I have trouble following one part, I can just use the demo in the zip file and figure out what should be correctly done. As someone who has no experience with unity before, this tutorial helps me quickly get my hands on making simple things in unity. And now I can confidently say that I know how to create a system in unity :).