Aerial Bombardment Challenge of Elders features the Grenade Kill Bonus along with Airborne (double damage while you are in the air) and Exposure (much higher Shield HP, but no recharge). Plan on farming? Use this helpful tip from /u/vredee As soon as you enter a chamber, just start unloading on a boss with the last bullet of Touch of Malice. If your whole fireteam is doing this, have one person stop at about a third of their health bar so that they can revive the two others when they die to Touch of Malice, and then all can continue as planned. This
