Pick up the Holo Man device - on the PC table in the middle of the room.

Open the hangar door.
Access code for the door: 54875

William's Control Room key: 40351
Nadia's Control Room key: 41293
Irene's Control Room key: 29307
Hiro's Control Room key: 84620
Tyler's Control Room key: 67854
Press on the console in the middle of the room in order to open the Research Lab.

In order to open the door inside the lab (that goes to the main server room), you need to stand close to the panel located on the left side of the door and turn on the flashlight.
Lab Computer Password: 947362531937

Access code: 4786528922
Go down the newly opened hatch and record William's message.

Go back to the research Lab and play William's message in order to open the door to the outside world (you need to be close to this door).

Access code: If we count from 1-8 the tiles that we can step on, the correct order is:
2 7 4 8 6 3 5 1
Press the button. This will open the door to the Disco floor room.

Access code: 2 5 3 8 6 3 1 4
Panel:


Access code:


Access code: from Right to left, top to bottom: 2, 3, 4
The button from the center of the room will open all remaining doors.

Next you will have to visit every room that contains a glyph with a button under it and press the glyphs in the numeric order: 01234 (Room 7, Room 1, Room 8, Room 6, Room 3)
This will open the door to the Alien Tower.



In order to access the underground tunnel, you will need to rotate the tower in 3 different ways; each will grant you access to 1 button on top of the tower.
First combination: 2 x Middle Button, 1x Right button
Second combination: from the previous setup, just press 1 x Right button
Third combination: from the previous setup, just press 2 x Middle Button and 3 x Right button
The rotated towers should look like this:

Press the orb that will open the door to the next room.

Press the orb next to Irene.

Move the lever to the middle position.

Access code: 5726, having Middle position of the lever on the control panel

Move the lever to the bottom position.
Go through the rightmost corridor.

While looking at the disco floor when standing on the south symbol and numbering the tiles as follows, the correct sequence is:

If the buttons are numbered from 1 to 4, left to right, press the following sequence: 2 3 4 1 1 4 3 2 (the code is given by the purple crystal before the disco floor rooml)

The final setup should look like this (view from the entrance):


In order to find your way out, keep taking rights

Press all the buttons from the room. Each of them will light up a sphere above the crystals.
Go on the scene to the rightmost crystal and use the flashlight on it. The door to the second gallery will open.

Having your flashlight on, illuminate the crystals (numbered 1-4 from left to right) in the following order: 32323214
In the next room, you'll need to find the correct sequence of actions in order to lift all the walls.
Solution: Press the following buttons: Left, Left, Down, Top

Go back through the room with the crystals on a scene and through the second gallery to the room with the platforms;

You will have to move to the box in the top left corner of the room and collect the "Decryption Key".

Go back outside to the temple and activate the crystals that can be found in each of the 4 corners of the temple (click on the tile that leans on the corners).
Go back inside to the room with the small green crystals; you'll see that a new door is opened.

The final code should look like this:

Press the button on the console. This will open the door to the next room.

The final code should look like this:

Press the button on the console. This will open the door to the VAT room.

If we consider the buttons numbered as follows, the sequence is: 8 4 2 2 1 6 7 9 3 4 8 5