On the following page of our guide to the Devil May Cry 5, you will find a description of the eleventh secret mission in the game.
Secret mission 11
Where to find it: Mission 15 - Crossroads: Nero
At some point in the mission, you will reach the first statue, where you can do shopping. You will also see a prosthesis nearby - the Punch Line. Go towards it and you will reach a large area - you can fly across using the metal hand. In the end, you will find a wall, use the Punch Line to fly to the top, and you can find the secret mission 11.
This time, you will have to reach the Blue Crystal within 30 seconds. It is not easy, because you have to perform jumps, use the Punch Line to quickly move on and cope with moving platforms. If you manage to do that in time, you will get a fragment of the blue sphere.