I was going for the feat where you have to destroy 6 turrets at the 1st boss fight for the regular duo and 8 turrets for the same fight on elite and the turrets have no target on them, I destroyed six of them eventually doing 6 melee taps around the turrets with one-handed but that dosn´t seem to be working regularly I´d say, since you have to be dpsing randomly around it and hoping that something (damage) is happening.
