My group used a strategy that we even use in roc strikes. The main issue over roc strikes is the amount of yellow bars and the psions being shielded but 2-3 shots from a word of crota takes the psions out and the rest you mainly just need to stay away from. If we got in trouble we hid for a minute to get our health back and to clear a path but for the most part we were cheeseless. We also used titan bubbles with weapons of light which helps.