Once you get there, be careful of patrolling guards. They all have guns so be sure to take them down one at a time while they are alone. If you are discovered, use your smoke pellets. If you are fast, the smoke pellets could even be enough to take out the enemies in the area (rather than just running).
After you've cleared the area, in front of the building is a ringing phone that you can answer to start a side mission. Head around to the side of the front of the building. There will be a shutter door that you can open with your Electric Charge. It will only open a little ways so you'll have to do a running slide under the door. Inside, turn right and head towards the double doors. You'll take the encryption key from the radio and do another hacking game for Penguin's radios. Find the yellow circle and then hold the A button. Now just head through the double doors.
