Indeed, yet that information is pulled strictly from the Camp Half-blood Wiki, when in turn this Rp also derives some of it beholding and knowledge directly from Mythology. In true Mythology Silver is capable of dispatching Werewolves, and a wide assortment of undead. This has been said throughout the ages in all manner of ways. In true mythology, you don't truly need a specific type of blade to kill a Greek/Roman beast. In the case of Hercules, who dispatched many a beast with merely his hands, or Perseus who dispatched many mythological beings with a Greek Short blade and many a tale of spears throughout his years. A mere man dispatched King Minus son(the Minotaur in the Labyrinth) with nothing more then a standard sword from the armory. 

This RP is not strictly Camp Half-Blood in the details, it also derives quite a bit of it's details and fabric of being from true mythology.