 Demetrio tells Machiavelli that after he refused Cesare's order to replicate even more Hidden Blades, he was tortured.Demetrio then tried to murder Cesare many times, but failed each time.When Machiavelli shows Demetrio the modified Hidden Blade blueprint from the stolen chest, Demetrio confirms that he was the one who made them, and calls them the Corvix Blades.