Yeah, it's amazing how much info can be retrieved from an ancient mummy!

What I managed to find is info, that he had measured doses of mushroom, which would indicate he used it for medicinal purpose.

https://www.thelancet.com/journals/lancet/article/PIIS0140-6736(05)79939-6/fulltext

He got shot with arrow in his shoulder. Scientists estimate it'd be fatal even with current medical treatment. There is more here:

https://en.wikipedia.org/wiki/%C3%96tzi#Cause_of_death