This method entailed having one titan with blessing, 2 ghorns, and one truth. Step 1 run to the left side of the map. Step 2 take out all the adds while ignoring kaliks Step 3 fire primary ammo at kaliks until he reaches about half health Step 4 when the mobs start spawning switch to your rocket launcher, place the bubble, and unload all your heavy ammo and maybe a bit of primary. Step 5 after kaliks is dead kill the fall target and claim your reward. This method was developed by Rudy_2468, Blackox79, and myself (ricksrighthand) on ps4.