Before you start this mission, you will be given a warning that it is the final mission of the game and there is no going back once you do this. Ths mission will start with a fountain where you must kill a bunch of soldiers in the area. Once complete, you need to go inside but the entrance is blocked with an electrified gate.
Since breaking a window is against the rules, you must take the more difficult and time-consuming approach of disabling the barrier. To do this you must solve a puzzle around the fountain where you need to bring power to the buildings to unlock the doors. Here is how to do it.
To solve this puzzle, you will need to use L1+R1 to rotate the decorative item that sits in the middle of the fountain. You might need to pull it a few times to get this to line up perfectly. Once you have it in the right place, you will be able to use the web to connect to the powered terminal at the tips of each of the round balls to the buildings that surround the water.
Once power is delivered to these buildings, the door will open, allowing you to override the power that is being sent to the barrier that is blocking your way into the building.
Once you have destroyed all of the generators behind the locked doors, the gate will deactivate and you will be able to progress with the final mission of Spiderman: Miles Morales on PlayStation.