Hard no pair up/grinding or renown is still not that hard with skeleton crewing(which I do sometimes by accident because I plan my pairings like by chapter 1 :( )
The run I'm doing though (Hard CLA, no pair up, fast completion[generally low turns so no stalling except for reinforcements], D E ranked and dropped weapons only, lowest leveled always deployed, no reclassing) is a nightmare. Up to chapter 18 right now, and I failed the chapter because a Warrior killed Olivia