It's probably because I'm retarded, but something feels weird here. When I did this on Legendary difficulty my heavy linear was doing like 300 a shot. I'm doing Mythic now, and I was playing with the meme crossbow, and suddenly I'm doing 6k a shot to this dude? Even the other earlier bosses (the minotaur and the shank) I was only doing 1k a shot. I switched back to my original linear and yep, 250 a shot.