The Struggle is right. For some reason, this extra episode only has "Casual" and "Survival" difficulties, no Normal. I played on Survival in co-op and it honestly was pretty tough (mostly due to scarce ammunition), but we managed through and even got an S Rank on a blind run. Not much to say for the story though. it helps fill some blanks when it comes to Moira's development in the campaign so it's nice but nothing amazing. Was a pretty fun, if tense, 45 minutes.