I did this without using EX weapons, but there are 2 parts where you're forced to use them. First one is in Ypsilon / The Creator 3 fight. When he uses his Seraphic Ruin skill, you have to destroy at least 1 orb with EX weapon, or else the attack will cover an entire screen. And in the first phase of the Mother fight, the only way to break her shield is to use an EX weapon. Even Copen's skill gets absorbed by it.
Regarding this game, I don't like how they butchered Copen's aerial movement. Now you can only do 1 dash in the air, if you don't have 1000 kudos, and there's no ground slam ability. I hope they bring it back in the future games.
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