Deus Ex: Mankind Divided Achievement/Trophy Guide - Samizdat
When you finish mission 5 and after you have finished with smiley, on your way out of the underground base you will be stopped by a man who needs your help with some hackers, accept the quest and head down to building 33.
On the top floor of the building you need to hack your way into the apartment then the computer and access the messanger tab to talk to the hacker on the other end. You need to choose the Inquire and Question options for the hacker to give you his location for the meet-up.
Make your way over to question the hacker and he will ask for your help in repayment for leaving your guys alone. You must now sneak over the the bank on the otherside of town and get into the CEO's office. The best way to do this is to use the cloak augment to pass through the laser grid and past the guards. When you reach the CEO's office you are looking for a folder containing information, this is behind the puzzle you see on the table.
Press X or Sqaure to raise and hold X or Square to rotate. The puzzles soloution is;Raise > Turn > Raise > Turn > Turn > Raise
Once you get inside the secret office hack the safe and steal the folder from it and return to K, the hacker. He will then ask you to help him with a sat dish so follow the waypoint marker to the dish and take the lift next to the building up to the roof and do so. After hacking it you will get the achievement/trophy and a new side quest will unlock later in the game.
I Have Added A Video Guide Below,