Dead End Final Battle - Part 2

Both Alicar and Josh were fighting the Progenitor.

Their swords were a blur in the distance. I could hear constant clashes between their metallic blades, producing a piercing screeching sound. They moved around, trying to get through the Progenitor's defence; however, they weren't making any ground at all. The Progenitor easily danced around, blocking every single one of their attacks.

Every once in a while, they'd be forced to leap back in order to dodge the Progenitor's attacks. They had no choice but to constantly keep up the pressure; if they gave him even the slightest opening, he'd be able to go onto the offensive. 

If he were to go on the offensive, there would be no way to stop him.

What could I do?