Survival Shooter Tutorial
Learn how to make an isometric survival shooter game with this project from Unite training day 2014.
The Survival Shooter tutorial is still hosted by Unity:
https://learn.unity.com/project/survival-shooter-tutorial
Just not the project files... Just Unity things...
There's also this archived Q&A thread on the forums which may be of interest:
https://discussions.unity.com/threads/survival-shooter-q-a.338190/?_ga=2.246851652.1766192043.1586332601-415165284.1573322357
And I've made an extended version of this project:
/projects/survival-shooter-extended
Disclaimer: This project is no longer officially supported. Most likely you'll get no support from me either, just use take it for what it is.
The Unity project is hosted on Github
You can get Unity 5.6.7 for both Windows and Mac from here:
Unity download archive