Tank Squad Exclusive Weapon Upgrade Priority Guide

Details recommended upgrade order for tank squad heroes—Marshall, Stetmann, Kimberley, Williams, and Murphy—across EW (Exclusive Weapon) level brackets (EW 1, EW 1→10, EW 10→20, EW 20→30), with justifications for each stage based on hero abilities and squad impact. Helps players optimize tank squad strength by prioritizing upgrades according to squad needs and hero effectiveness.