Depends on your skill and timing as well as your audio level, being able to hear buzzing from deathsquitos or giggling from fulins will help massively, being able to hit/parry squitos from good timing will make them no threat at all, you could pull off killing squtios in iron and one or two fulins but not an entire fulin village that is a real challange, using rocks that fulins can't climb is a good place to squat while you pick them off with a bow, if you're an average player then go with silver gear like most have already said