For those looking for an easier way to do this armor objective, there is an easier way The orbs you pick up in 2 strikes The arms dealer and sav'athuns song They Can used as a melee weapon (solar applies melting point and the void one blinds foes once hit) Never use their 'charge', ergo infinite melee charge. As for the arc orb, there are 2 locations for it, one is the fallen walker P.E but is on a timer of 60seconds once picked up, the other is infinite. There is an adventure (believe it's called siege breaker) on Nessus that requires you to kill 3 serviters. They each drop an arc orb with no timer. Just do not kill the captain at the end just wipe instead Edit 1: for whatever reason the above tip DOES NOT work with a warlock, neither does the sword glitch.