Collect and read 2 journals at the start. One behind a pillar on the right and another on the table on the left:

Rotate circles using green and brown button to create symbol of the bug facing a flower and press red button:

When the bridge appears continue walking to the volcano and solve the pillar puzzle there.
You have to achieve a color like on top of the pillar by mixing 2 signs below related to the color of the painting on the wall outside:

At the start walk into the water 10 times to achieve:

Wait till the ship disappears under water and walk into the elevator to finish the level.

At the start turn back and walk into the water. Swim a bit away from the beach to achieve:

There are 3 journals here. One between palm trees on the right from the start. One at the camp up the hill and another on a table behind 4 doors building in the middle:

The goal here is to rise 3 pillars in the middle of the map to their maximum heights and then create darkness that opens 2 locked doors inside the building.

First, we need to fully power the pillars using solar panels. Each pillar has a power indicator next to the buttons. The black boxes on the side of each pillar correspond to the similar boxes on the solar panels and show which panel powers that pillar.

Rotate panels 1, 2, and 3 towards the sun, making sure that the power indicators on the panels are at maximum. Climb the tower and aim the spotlight at the middle solar panel. Rotate the panel next to the bulding (marked 0) away from the sun. Rise the pillars. And finally, rotate the panel (also indicated as 0) away from the sun and then towards it. If done correctly the sky should flash red and the doors should open. Go through to finish the level.

Idle in this level for 1 hour (can alt+tab) to get:

Climb the stairs

Above puzzle is timed. Red button resets the puzzle.

Press the Yellow (centre-bottom) button 2x to transfer half of the liquid from the main tank to that on right side
Rotate 1x by holding the Orange (top-left) button so that the right tank is now facing you.
Repeat all 1x (2x Yellow, 1x Orange)
Press Yellow 1x
Rotate Orange 1x
Refill the main tank by pressing the Blue (Centre-top) button
Press Yellow 3x
Rotate Orange 1x
Press Yellow 1x
Rotate Orange 2x
Press Yellow 1x

Enter symbols on the left side like in the picture below and press the red button:

Press another red button next to the coffin to end this level

Continue walking forward and look for a suitcase on the seat on the right. Click the suitcase a few times to complete the level.

Go straight inside the building and jump in the black hole in the middle (or small black hole at wall on right). Read the only journal on the bookcase:

and enter buttons to program movement of hologram like in picture below:

Go back using painting on the wall

You have to enter the elevator and the hologram will help you by opening the gate of the elevator and distracting the mask so you could sneak behind it inside the elevator.

Let's start. It needs a bit of timing. Recommended to watch below the video first. Press the button next to the hologram and quickly run to the next one at the opposite side of this room. Wait until the counter above hologram reaches ~5 and press the button to the open gate in front of him.
Go down the ramp and wait till the hologram lowers the two panels. Press the button and wait for hologram to do the same on his side.
Now wait till the hologram walks down the ramp and distracts the mask and quickly run in the elevator.

Don't alt-tab/pause the game here. Ride the elevator to the top and turn off 4 TVs there to complete the level.

Walk straight up the mountain following the path to find the last journal. 100% achieved here. You can continue walking to see the ending or force quit.