Biggest thing you can do is snipe down the turrets on the skiffs as soon as you see them flying in. Taking ship damage along with everything else is ridiculous. If you're low, don't be afraid to leave the circle for safety. You should still have enough time to finish. Titan bubbles help a lot! Get on blessings or armor and you can let yourself breathe for a minute or 2. Finally make sure at least one person, maybe even 2, are using close range special weapons like FRs or shotguns. Snipers help at the beginning of each wave, but strong enemies are gonna get through and slam you. Finally, back to class recommendations: bubble for Titans- defense is key. Invisibility for hunters. Vanish I'm smoke is best because it helps everyone. But a blade dancer going invisible can still save a wipe. For warlocks self res is the safest. Other subclasses get more kills, but this part of the strike is about defense. Good luck!