New to thief and I was leveling at core Tyria (lv32 now). How do you fight against a group of mobs, especially a group of ranged mobs? I played necro and leveled to 80 but I never felt so squishy as a thief. I'm on S/P thief and all I know is to use black powder to blind mobs and auto attack them. Most of the time I died because of the pressure from the group. Is it just because the class is too squishy or I can use some other strategy to fight against them? How can I improve my gameplay?