(3) Peaceful option: Getting to the elevator Deus Ex: HR Guide
Last update: 11 May 2016
Map legend: 1 - Passage to the lobby; 2 - Door to the main corridor; 3 - Ladder leading to the air vent.
There are five enemies in the warehouse, but eliminating them quietly shouldn't be a problem. Start with jumping down on one of the lower crates to collect tranquilizer rifle ammo #1. Now head north, jumping down to the lowest level #2.
Head north, hiding near crates after few meters. You should first eliminate the terrorist who is patrolling this area and who is stopping from time to time a place which is not guarded by other enemies (screen above).
Stay in the area and use nearby crates #1 in order to get to the upper balcony (you have to jump over the railing). Head east and jump down where the railing is missing #2. Now turn south and stay in shadows as long as possible.
Pick up and move a crate located by the eastern wall #1 and move south a little. You should be behind second enemy #2. Attack him only when one of terrorists patrolling the warehouse will go away. Move the corpse of stunned opponent to some safe place.
Return to the place where you've eliminated first terrorist and now take care of his buddy - he is searching for something in the crate #1. Same as before do not leave his body to be seen. Now you have to eliminate a terrorist patrolling the warehouse but do this very carefully #2.
It is time for second terrorist searching for something in the crate #1. Now you can freely look around. I suggest taking a closer look at some small rooms in the southern part of the warehouse. You'll find there some lockers, e-book, a newspaper and n unsecured computer terminal #2 with some messages.
I suggest choosing a northern way leading to the main lobby #1. Be careful because there will be two terrorist there. Use opportunity to attack both of them by surprise #2. Now look around, open a drawer and examine two computer terminals (with two and three messages respectively).
Return to the main warehouse. If you've been avoiding enemies till now or you want to pass by the next group of them, then in the north-eastern part of the warehouse you can find a ladder #1. After reaching upper balconies you could pick up one of the crates and move it near the wall in order to use air vents #2.
A way through air vents is not linear in this case. In order to get best results, reach first junction #1, turn left and then right. This would allow you to reach and exit to the northernmost #2.
If you want to deal with terrorists personally, I suggest using a door located in the northern part of the warehouse (Lockers, Lobby, Shipping) #1. If three opponents are still in one place, approach them and listen to the whole conversation. But if there are apart, go to the room on the right and kill one of the enemies #2.
A second terrorist should patrol nearby corridors #1 and it is best to surprise him when he turns around and goes in the opposite direction. Use the moment and explore toilets - in one of them you'll find and e-book. Now go to the locker room where third terrorist is located #2. After eliminating him, open all lockers - you'll find credits, stun gun ammo and tranquilizer rifle ammo.