The two titans are really all you need shooting the ogres the ones on the platform just throw a grenade and look for your knight. Relic gets it jump up top won't Titan bubble with blessings. Wait for relic holder to get there or if not use your tom with blessings . After flinch drop down and kill adds. Have a different Titan with Armor of light drop it in the very middle of the echo bubble. When echo slams make sure everyone is in the armor of light barely takes any damage. Rinse and repeat.