Mission 15: The Trade | Keys DMC: Devil May Cry Guide

KEY 1/2 (COPPER) - Key can be found nearby an area where you need to hit containers three times. Before doing that, go left and use Angel Boost. Search a square looking for the secret.

KEY 2/2 (COPPER) - Key can be found when you reach a place where you can pull a bus. Go left and use an Angel Boost to avoid a big abyss. Look left for a balcony with a key.