Risotto figures out that Doppio must be a Stand user that the boss trusts in deeply because he’s able to hear the noise from a certain Stand. Risotto then uses his Stand Metallic against him. Metallic is able to control magnetic force and attacks Doppio. Doppio uses the part of the boss’s power he received from him. While they’re fighting, Risotto realizes that Doppio’s personality and actions seem to be changing and he realizes exactly who Doppio is.
There's nothing else you can do.
أنت عاجزٌ عن فعل أي شيء
Du kannst nichts mehr tun.
No hay nada que puedas hacer.
No hay nada que puedas hacer.
Tu n’as plus d’options.
Non puoi fare più niente ormai.
Não tem mais nada que você possa fazer!
Ты ничего мне не сделаешь, 
я держу дистанцию.