(5) Peaceful solution: Opening the hangar door Deus Ex: HR Guide
Last update: 11 May 2016
Map legend: 1 - Stairs leading to upper balconies; 2 - Northern control room; 3 - Southern control room.
Start off by heading west, finding a newspaper and opening lockers along the way. Enter the hangar and take cover behind a balustrade. Notice that two mechs are patrolling the hangar and if you don't want to raise an alarm you'll have to find a way to shut them down.
Your main objective will be to get to the upper balconies and you should start by going west #1. Observe the mechs constantly, so that you won't end up in their line of sight (thankfully nearby balustrades are a good cover). Get to the end of the balcony #2 and jump over a balustrade after making sure that it's completely safe.
You are now in the northern part of the hangar and you'll have to continue moving west. Hide behind cover as much as possible. The same applies to moving between nearby objects #1. Make a stop once you're close enough to the stairs #2.
If you have camouflage (Cloaking System augmentation), then you should turn it on right now #1 and get to the stairs safely. Otherwise you'll have to time your every move perfectly so that you won't be noticed by the mechs or use the Jump Enhancement augmentation to try and reach the staircase from the side. Sadly making your way to the stairs won't solve all of your problems, because there's a security camera above you and it's going to be important to avoid it #2.
Take every precaution you need to and move slowly, avoiding the mechs and the security camera along the way. Eventually you should be able to reach the upper floor and your first order of business here will be to enter a control room #1. Take an EMP grenade from a locker and interact with an unprotected computer terminal. Once you're done open the northern door to find yourself standing close to a new balcony #2.
Use this balcony to get to the southern control room #1 and make sure to stay away from the balustrades along the way to avoid being seen by the mechs. Once you're inside the second room collect an Ebook and then interact with a new computer terminal #2. This computer has a level three protection, but you may use a qilin password (this password is obtained from a datapad found next to one of the defeated soldiers in Zhao's penthouse).
The game will allow you to shut down cameras and robots after successfully hacking the system #1, however a Robot Domination augmentation is needed for the second task. If you don't have this implant, then your only solution will be to destroy both mechs and that has been covered in the Aggressive solution for this step of the walkthrough. If you've managed to disable the mechs you can return to the northern control room and press a previously unactive red button #2. Doing this will open the hangar door.
Important! The walkthrough is continued in Step 6 (Using the chopper).
Reward: 2500 experience points + 750 experience points for staying undetected.