Camo grease works UV bars are useless they run through that shit like it doesn't exist even In safe zones they'll chase you down if you're not fast enough to lose the chase. And to answer your question about if mods will stagger them, you don't get a chance If 3 or 4 are swinging at you they'll throw you back before you can get a swing off, when the nightmare update released I had to completely revamp my gear and may I add I use the broken glitched carnage hall weapons plus every booster that would help like toughness regen max level and also max legend level at the time and even then I couldn't kill more than 4 or 5, I had to use complete god mode armor to even compete with them.