I'm so glad they got rid of the pdf guides. The format was always so disappointing, and somehow the guides were less helpful that their html counterparts.
Deus Ex Human Revolution Walkthrough
Take the helm as Adam Jensen and uncover the conspiracy. Our Deus Ex Human Revolution Walkthrough provides a full walkthrough, sidequests, and info on augmentations.
Picus Communications
Things are quiet in Picus--too quiet for it not to be a trap--however, this does leave you free to hack the office computers for free experience, credits, and items. For some reason there are no stores during your shore leave at Montreal, so managing your goodies along with everything pilfered from China will take some juggling.

Once your satisfied with your five figured discounts, head to Eliza's office to confront the TV personality. After a cutscene, the alarm will sound. It's best to hide inside one of the nearby ducts, as nearly ten guards will storm the office within 15 seconds. Continue moving through the ventilation system to either stay away or confuse the Tyrant mercenaries.

Return to the main office and down to the lower level. Either sneak behind the desks on the left side of the room or kill each enemy from cover. The large number of enemies tend to cluster, leaving them vulnerable to grenades and heavy rifle fire. Regardless, your goal is the next room down the hall.

The entrance to this room is guarded by a security camera and a lone guard. Carefully crawl passed the camera's view or hack the system. Use a takedown on the single guard and move towards the elevator shaft. The Icarus landing will allow you to drop down and acquire some extra goodies at the bottom of the shaft. Unfortunately there isn't a means of getting climbing back up, so you'll need to go through the ducts and up a few ladders to reach the second floor.

There are another five Tyrants patrolling the next room: four on the ground level and another up the stairs. One of these enemies is a deadly heavy rifleman who can take a few headshots before going down. As with the Belltower heavies, take out this large Tyrant with an instant takedown. Once enough of the area is clear, enter the room marked "Funicular". Hack through the next door and take the stairs down to Zone 6.

Two Tyrant guards will be patrolling the area, however there are plenty of rooms and alcoves to duck into to avoid detection. You can also use these rooms to hide bodies if you choose to use takedowns. Head towards the objective marker to reach two more guards and an auto turret. If you have the hacking skill, sneak to the computer on the left take control of the turret so that it kills the guards for you.

Grab the ammo and mines in this room and hit the switch for the elevator. The lift is on the bottom floor, so it will take a good amount of time before it reaches you. In this time another four guards will emerge. Quickly hide near the elevator and get ready to either fire back or flee when the elevator door opens. Enjoy the ride down and you'll emerge at the Illuminati HQ.

Two guards, two robots, a camera, and tripwires are blocking your path forward. The terminal for the lasers is only level one, so hacking it will be easy no matter your skill. However, to get at the console unnoticed you'll need to stun or kill at least one of the guards. Avoid or destroy the robot on the first floor and loot the weapons on the room to the left.

Even if the remaining guards spot you or are alerted, they won't bother opening the glass doors blocking their line of fire. This can be used to your advantage by baiting them at the door, but instead of charging, head through the duct on the left. Travel into the next room and kill or takedown the Tyrants that are still transfixed on the entrance.

Once ready, follow the objective marker to the sub level and detonate the mines adorning the walls. On this floor is a robot and heavy. Like before, a takedown is an easy way of dealing with the tougher humans. You can also hack control of the robot and turn it on the Tyrant. Once you've cleared your current foes, continue on to the main computer room. Stop inside the supply room on the left to grab a heavy rifle and a huge amount of ammo. Once primed, head to the computer room for a boss fight.

Yelena is packing two machine pistols, a cloaking system, and can slide attack. If you haven't already, upgrade your skin augmentations to lower damage and avoid electric shocks. Arm upgrades to lower recoil and tighten sights will also be a great asset. It's recommended that you use a rapid fire weapon--the rifle, heavy rifle, or machine pistol are all decent choices. Your enemy moves a little too quickly for cover, so keep on your toes and circle around the walls to avoid fire. Eliza will also try to provide you with intel about Yelena's location.

As for the fight itself, you may notice that floor is covered with water. This will not only allow you to see Yelena's footsteps, but can be used for a damage blast (Though you might hurt yourself if you lack the correct augmentations). If you or your enemy cause enough damage to the computers, they will explode with great force and electrify the floor. If you time it right, this environmental hazard is a great means of dealing damage.
Once the high ranking Tyrant is dead, stock up on weapons and ammo inside the room's lockers. When finished resupplying, head to the helipad and Malik will bring you back home.




