Every move you earn is one you perform. Real inputs, real combo routes. Projectiles, launchers, counters, gap closers. Upgrade what's working or rip it out when something better comes along.
Stack the right artifacts and your combos start doing things they shouldn't. Stack the wrong ones and your build turns against you. Some of the best runs start with the worst luck.
Volley broke the seal that kept Paradox contained. Her best friend vanished into the Void, and she's tearing through it to find him. Every death brings her closer to the truth about what really happened.
Your build carries you through the act. The boss doesn't care. These fights are designed to end your run. Survive, and earn the most powerful moves and artifacts in the game. Die, better luck next time.