"Batter up," Sonja says, and there's a tone like she could have smiled or the sentiment is there, but her expression stays calm.

With that many targets advancing that quickly, the sword's her best bet.

Augmented with a little magic, but she'll use that discreetly. The first wave hits, and Sonja ends up decapitating the nearest primate to her, which is messy, and sends its tiny head flying. Oops.