I was a bit apprehensive about posting a google translated article, as some parts may be slightly off, so it's great to see some people enjoyed it despite that.
It's originally written by Norway's national broadcasting (NRK), and since the art/pictures don't seem to be included in the translated version, here's the original link for anyone who wants to check it out: https://www.nrk.no/dokumentar/xl/forst-da-mats-var-dod_-fors...
It has a few images of Mats, a few of his guildmates and a few drawings which really help bring the story to life.