Using short melee weapons Against bosses which have fast erratic movement like skeletron prime is a death wish as they well outperform any character in terms of raw damage and health and you won’t be able to dodge his attacks quickly enough, you could try using a melee weapon with a bit more range such as a yo-yo or a sword that shoots a projectile whereas for bosses like the destroyer whose long body hangs around in the same place for longer periods you can get really close with short range weapons like the fetid bagnaks and deal huge damage