Anyone got any strategies to challenge mode the higher end normals? I actually haven't tried them yet, but it seems like doing several million damage on a 10x or less without ideal subs could be pretty hard.
I did Heroes, Hera, and Starlight Sanctuary with Anaphon, as many anaphon friends as I could find, and a Sumire or 2 to round things out
Legendary Earth was R.Odin, R.Odin friends, and a Goemon to get the last floor. Think I did the same for Seaway.
Heart crosses are great for challenge mode normals because there are no preempts to eat your cross
Yomidra with a team of all Yomidra friends has done well enough on technicals but I haven't gotten to the Alt dungeons yet