Treach + Gulli has always been my go-to.
IAS and Fade from Treach is unbeatable. Fort will *show* more dmg but iirc a Treach will give him more overall DPS, then stacked with gulli is even more. He should rip through bosses and your standard light immunes.
This post was edited by NoTap on Jun 21 2020 02:39pm