if you are talking about this event, no, this event is pretty brutal
there is someone on ULMF forum that have team mostly from event unit, and you could find guide video with event unit only
so it doesnt matter if you dont have gacha unit, as long as you could use your SCs efficiently
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man this 70/6 map is annoying, keep getting 2*
my team can block the archangel just fine, but not the angels rush