Deus Ex Human Revolution - Achievements and Trophies Guide

It is certainly one of the most difficult achievements in the game. Except for bosses, you cannot kill any enemies. You can still use non-lethal attacks like darts, stun grenades, and melee attack behind you (only the one that doesn't kill).

You will then have to look for alternative passages (such as ventilation ducts) to avoid contact with enemies as much as possible.

In this, the "stealth" video solution that you can find at the following address may be useful

Deus Ex Human Revolution - Video Walkthrough Solution [360-PS3-PC]

You must avoid triggering any alarms, so you must NOT be spotted by the enemies (and if they spot you you must kill them in a few moments, before they give the alarm). Even if you are detected by cameras or automatic turrets an alarm will be triggered. You have to be invisible, in this the "stealth" video solution that you can find at the following address can be useful

 Deus Ex Human Revolution - Video Walkthrough Solution [360-PS3-PC]

To find them all, follow the dedicated guide:

Deus Ex Human Revolution - Guide to 29 experience books

By placing yourself behind an enemy (without being seen) and pressing   ( on PS3) you will perform a NON-lethal takedown.

If, on the other hand, you keep the same button pressed for a long time, you will perform a LETHAL knockdown.

To get this result you need to get to 50 and both LETHAL and NON-LETHAL count. I advise you to always perform NON-LETALS because those are also counted for the "No Scruples" result

Also after completing the first mission and after talking to Sarif you can find Ms Reed (Megan's mother) and accept her quest. Complete it to unlock this achievement.

To do this you have to enter the morgue by convincing policeman Wayne Haas at the reception of the police station (this will unlock the result. "Behind a desk").

Hack the safe in the garage and grab the contents, including the bracelet (it will unlock you "Sentimental value"). Here is a video about the mission.

There is a black prostitute who is actually an undercover agent between Jensen's apartment and the Detroit Police Station. Talk to him to start this mission.

Several steps must be taken to prove Jack O'Malley's guilt. Complete the mission to get the result. 

At the end of the quest make sure you accept O'Malley's offer in order to get the result 'Dirty Money'.

Once you leave Detroit and arrive in Shanghai, head to the Hua Hung Hotel. Continue up the stairs until you reach a door. Upon entering you should see a man and a woman arguing in an upgrade apartment. Talk to the woman to get this mission.

Do what you are asked to do and remember that towards the end of the quest you will have the possibility to unlock the achievement as well "The fall". To do this you have to choose to kill Chan, then drag him to the roof and throw him down to simulate suicide. Then go back to Mei and you will also get "Dirty Business".

In Shanghai in The Hive after talking to Tong go downstairs to talk to the bartender, Bobby Bao, to start this side quest.

Proceed in the quest. At some point you will have to make a choice: if you decide to pay the 5.000 credits to Bobby Bao in addition to completing this quest (and getting the "Bar account" result) you will also unlock the result. "Guardian angel".

If you want to save these 5.000 credits and still unlock "Guardian Angel" you can save before paying the 5.000 credits and unlock the result and then reload the save by continuing in the quest with the alternative choice (without spending anything).

Here is a video dedicated to this mission: VIDEO

As you progress through the main mission in Shanghai at some point Malik will ask for your help in getting justice on the murder of a friend of his.

Do as shown in the video below and when you confront Lee Hong choose exactly the answers shown in the video to unlock the result as well. "Super Hound"

This quest begins when you arrive from the Detroit Convention Center, when you visit the city for the second time. There are fears that someone is planning to blow up the police station.

You will have to take out the suspect and then disarm the bomb using the code 0000. This way you will also get the result. "Lucky choice". Follow the video for further help on this mission.

Upon entering the Youhzai neighborhood you will be contacted by a person. You will need to track down a group of terrorists and recover a data chip. Make sure you don't kill anyone (you can use NON-lethal weapons and attacks).

When you return, make sure you have the Social Enhancer, so talking to her first choose the "Get informed" option and then "Charm" to get the result too. "Casanova"

Follow the guide dedicated to this result

Deus Ex Human Revolution - Guide to hidden objects in Megan's office

After the fight with a boss of the game you will return to the Sarif factories and on that occasion you will be able to unlock this achievement.

First of all, talk to Pritchard and then to the guests. Then go see David Sarif.

It seems like the conversation may change from time to time, so be sure to save before talking to him. It may take several attempts as this result depends in part on luck and intuition. Follow the video