It's still playable, just a bit more obnoxious. I hate doing Riposte in Menagerie with blackout because you have to use the swords to break Shrek's shields and Shrek decides to rage slam, pretty much killing everyone in the vicinity. The knights in Hunted are a toss-up. Usually manage to stagger them/kill them before they get close enough to sword boop. As for Reckoning... Bridge? Kill them before they get close. Really simple but people don't seem to want to do it. Split your team up in the circle; nobody should be facing a 'boss' alone (supers aside). If it's Knight Week, the trick is to stay mobile. Get in the light pool, do your heavy-damaging supers, then move. Don't just stand there and fire until you all die. Tell the warlock to switch to nova bomb because Well is useless here when blackout is on.