Talk:Fall 2019 Event/@comment-2607:FB90:3DA:FED6:8418:618D:8305:25A8-20191212202240/@comment-43816658-20191212230130

You can chip and not sink or sink the boss during the hp bar depletion stage (need to at least damage boss) but once you hit last dance, the only way to clear the boss is to sink them. You really want as many A and S ranks as possible to have chances for rare ship drops. Friend fleets can definitely help but wont be able to help you power through the rest of the map besides the boss if you dont have the ships or resources.