Deus Ex: Human Revolution

Ok, I'll try and be as detailed as possible to help you get this achievement while keeping it spoiler free.

Step 1) Beat the game on any difficulty.

If I've missed anything in the solution please message me.

The guy who wrote the other solution to this achievement may have come across as being a bit sarcastic, hence the negative votes, so i thought i would be genuine and give some useful tips that i used to complete the game.

I went through the game stealthy so these tips will suit that playing style, i have yet to do a play through that is not stealthy so sorry there is no tips on that.

Firstly, if you are being stealthy then i would advise you to save the game once you pass every area, just in case you are spotted, this makes thing easier because all you have to do is reload and try again.

Secondly, i would say to stay crouched when you are in areas with guards, as they can hear your footsteps and they will become alarmed and look for you.

Thirdly, look for shortcuts as they are always useful and some can lead to secret rooms with items that are useful, and e-books.

Fourthly - not a word but you know. I would advise to buy the augmentation that allows you to do double takedowns, this is because it makes things easier, as you will see.

Try take as many shortcuts, hack as many computers and do as many side missions as possible as they get you XP, which leads to Praxis points, you can also buy these at the LIMB clinic if you did not know.

Hope some of these tips help, if you need any further help i would check the guides on the 'Legend' achievement on here. As they will probably be a bit more detailed.

Not much info on my solution but it was just a quick write up, hope I helped more than the guy who did the other solution.