Filena is little more than a replacement for grenades and melee attacks. Syd can throw her at enemies for slow-mo takedowns or time melee attacks for hand-in-hand drubbings. Both work fine, even if throwing her is a little overpowered, but they really aren’t anything more than you’d expect from any competent third-person action hero. Which Syd largely isn’t. It doesn’t take a quantum theorist to see this is rotten.