note: i'm not great so I need tips, and i'm talking Strictly about supers here
Every-time i pop radiance I either get tethered, GGed, hammered, first of havoced, nova bombs, or zaped.
I use radiant skin which I think lets me take one GG shot, but I get followed up really quickly by the time it takes me to throw enough grenades to kill them. Bunch of super grant more health and damage shields anyway.
Radiance actually requires you to have high DIS or STR in order to make your super effective, which is pretty silly given how no other subclass does this.
-
Don't actively charge in, lay low, and put the perks on your class for maximum discipline, and use the class perk for maximum damage and burning. I would also use fire bolt grenades and heart Of fire. Against people without supers you should generally be good though.