It really easy, especially for dunc. My tantrum gameplay is sloppy cause i've never been a good tantrum player tbh but the char does wonders. Regarding the proc, knife throw might be a thing too but didn't get the chance to get a decent craft with that proc. Widowmaker instead procs more punishers from the tranquilizer bolt.
*EDIT* Anyway, untill i figure out a way to make the crossbow zon work, what would be the next challenge people?