(Image credit: Stellar Jockeys) Brigador Killers' demo has one of my new favorite videogame tutorials: You control a giant rolling pinball of a mech as it rolls down a long corridor, a ghostly computer voice urging you on. "YOUR PEOPLE KILLED FOR PROFIT," it declares. "TAKE WHAT THEY TOOK FROM YOU." You're then let loose in a bustling city center to level buildings like a reverse Katamari. This cathartic act of sci-fi political violence then zooms out to another terrorist cell watching it go down on the news. Their (your) timetable just moved up. Brigador Killers — Official Demo Trailer - YouTube Watch On I've been Brigador-curious for a long time, but playing its sequel's demo has accelerated my own timetable for checking out the 2016 isometric mech shooter. I know the gist of it: You play as immoral mercenaries intervening in a future war on behalf of what are probably the bad guys.…