I have to say something about telemetry. Something important, which I forgot. This is exactly how you get to this issue.
First, you need to ask yourself: What question do I want to get an answer for. You will then need to specify what data you need to answer this question and on what occasions it should be collected.
I want to know where and why players die. To determine this you need to collect location data and the cause of death at the time when the event 'śmierć _gracza ' occurs.
With the data you have to somehow organize them. Excel 2016 has a tool to impose data on the map! With its help you can very easily create heatmapę.