So, basically i did this the first time a few minutes ago, since i'm someone using ray weapons+35 and +10 units, wishing to upgrade them. basically, i went in there expecting this to be a good challenge with equipment at hand that's supposed to be upgraded doing this, what i didn't expect is to actually time out and have somewhat of a hard time.
i went on my SU/FI with my maxed out 13* Wanda, since i didn't know what to expect.
i was hoping for a way to farm the union boosters, whenever possible if the UQ was up and i'm actually sitting at my computer, but this turned out a bit tougher then expected and in the end i didn't feel like it was worth the trouble and simply just wait for better unit drops and keep on farming slave/nemesis weapons.
i still would like to challenge myself and try to win this a few times, just for the fun of it, but is there an actual strategy to this other then breaking parts quickly?