PART ONE  is to "find and cut 2 wire boxes"

In a single run spawns 4 boxes.
You need to cut the 2/4 correctly. Watch the 2 colors carefully and cut.
Dont cut boxes with different colors than the 2 that shows up.

There are a total of 11 wire boxes locations.
9 upstairs.
2 down stairs.

Upstairs locations can be on :
Green room ( 2 boxes) :
Red room ( 1 boxes) :
Big room (3 boxes) :
Corridor:
Small corridor:
Piano:


Downstairs locations can be on :
Downstairs left:
Downstairs right:
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 PART 2 is "the west wing".

There are 4 guards there.
1 is watching the entrance up to the conference area.
The other 3 are at the west wing.

You need to enter the oval office and after that  to remove the painting. Behind it has a hidden safe. After that , you need to find clues. Clues can be found on the laptops.

Laptops location are on:
Conference room
Cabinet room ( 2 laptops)
Corridor by cabinet room
Corridor by Roosevelt room
Roosevelt room ( 3 laptops)
Empty corridor

5 seconds after the interaction on laptop, an email will show up. You just want to check the " subject " line.  If it doesn't mention " safe code "  or " USB stick " move on to the next. When you find it, read the text,  it will tell you where is the USB stick location.  It can mention :
1- a piece of furniture
2- Roosevelt or cabinet room
3- adjacent corridor

After finding USB stick follow the objective
" extract the code". put the USB stick on the laptop and you will see a number. This number is the code for the hidden safe. use it, open the safe and grab the keycard inside. Next move is to go the library. There you must search the books to find the button.
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PART 3 is "P. E. O. C"

There are only 3 guards in this section. After killing one a fourth guard called in. If you still have 4 pagers left. You already won.

if you have 4 pagers left, kill them all and hack the mainframe peacefully. If you don't have 4 pagers left just hack carefully and hide behind the desk.

There is a possibility during that moment to:
 1- firewall needs to be disabled from a remote computer.  Hack pauses until you interact with the marked terminal. (In this case there is no time limit).
2- phone call. The time limit here is 60 seconds. After 60s the alarm goes off. 

When hack is done you can interact the vault and start looting the pardons.
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PART 4 " escape"

Point of no return is 60s. 
You can get in escape zone before the heli comes if you know the straight direction. Don't worry you can't get lost.

Here is a full gameplay walkthrough: