Scattered throughout DmC Devil May Cry are hidden "Argent Keys." There are four types of these Argent keys; copper, argent, gold and ivory. Each of these four types of keys open up a corresponding secret door in every mission of the game. In turn, these secret doors lead to bonus secret missions. This guide only focuses on the location of the Argent keys — more specifically, the location of the key in Mission #1, titled "Found".
Mission #1 'Found' Hidden Keys
There is only one hidden key in this mission. After you find your first lost soul, turn left.
Jump across a few floating platforms and they will lead you to the key.
Congratulations you have found the Copper Key in Mission 1 "Found". Continue to Mission #2.
