To get Heatmap Emitter showing a heatmap in your editor/game all you need is three lines of code, a free Playtomic account, and a URL in the inspector.
You can display the intensity and position of any event you choose to track. Simply set Playtomic's heatmap to track the coordinates of any event and you can track deaths, quit locations, movement or anything else you can immagine that has coordinates.
View the tutorial.
*This is a resource intensive process during run-time with large data-set. It should be turned off when data is not being analyzed.