After multiple attempts at the mission of “Complete 16 floors of the event” I finally worked out that the mission isn’t cumulative!!!
So the event has a roguelite gimmick to it, but the main content ends after the 12th floor, then it just goes random.
I have always been playing to the 12th floor then quitting when prompted if I want to optionally continue…

But I needed to keep going for 4 more floors to do the mission!
So annoying! I wasted so much time replaying those 12 floors trying to meet other mission criteria at the same time!

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