User blog comment:SayuriDarling/The Mark of Athena Official Discussion/@comment-4405022-20130224150702/@comment-6719194-20130224151214

I think hat they will also get some help from the Romans, because as Nico said they could maybe win a fight against the monsters guarding the doors on the mortal side but they would need help if they were to defeat the monsters in the underworld.