Earlier I have mentioned that I was using some trailhead api workaround to get Trailhead data and I was fascinated by the app created by others
Now I have decided to investigate more and publish some app to get trailhead data. It should be updated often but it works at March 2020.
I have also published to code https://github.com/Patlatus/Salesforce-Trailhead-Api-Hack
This is a hack implementation to get access to Trailhead API to get Trailhead user points and other attributes. Requests should be used in the form https://trailheadapi.herokuapp.com/?link=/id/userAlias