Tren is a helluva drug. Ran it once... liked the gains... sides were weird... will run it again but not anytime soon. Too harsh and I would hate to build a tolerance to tren.
I run Tren once a year for 8 weeks, and no more than 400 mgs. Love the gains and no sides. Everyone is not mentioning the alcohol abuse by your friend, which probably had as much to do as the Tren. In the line if business I'm in I see homeless drunks dying of alcohol abuse often. And these guys are 25-30 years old. Abuse of any kind is never good.
Real talk dude! That which comes easy is not worth achieving. Weight training is suppose to build strength and character, too many people focus on the superficial aspects and neglect the real value of strength training, which is discipline, patience, dedication and sacrifice. All universal traits of the archetypal hero's journey.