https://youtu.be/7Jrk8RLPe04

PUZZLE: Accessing the red room
HINT 1: Observe your surroundings.
HINT 2: You can drag items and obstacles out of your way.
HINT 3: You can crouch.
SOLUTION: Press the red button found under the desk.

PUZZLE: Finding hints
HINT: Carefully observe the room.
SOLUTION: Look inside one of the blue vases and take out the note inside.
ACQUIRES: Old note

PUZZLE: Octagonal Room
HINT: Observe the contents of the octagonal room carefully.
SOLUTION: In the octagonal room, rotate the two lights and shine them onto the paintings of the lightbulb and the lantern.
ACQUIRES: Old note

PUZZLE: Barrier next to the game room
HINT 1: Check the policeman painting.
HINT 2: Consider the hint from the octagonal room about painting = 1, painting = 7
HINT 3: Consider the photo hint from the vase.
HINT 4: You may not be able to get past the barriers, but you can still see through them.
SOLUTION: A = 2 (2 farmers in painting), R = 5 (5 dogs in painting), T = 13 (13 people in the Last Supper painting). Code=2513.

PUZZLE: The barrier to the next part of the Painting Gallery
HINT 1: Carefully observe what lies beyond the barrier.
HINT 2: Not only can see you through the barriers, but you can reach items that lie just beyond.
SOLUTION: Grab the wooden circle on the painting of the monocled man.
ACQUIRES: Wooden Circle

PUZZLE: Wooden Circle
HINT: Does the wooden circle look familiar?
SOLUTION: Place the wooden circle on the tic-tac-toe board. Use the keycard on the wall keypad.
ACQUIRES: Yellow Keycard

PUZZLE: Finding key items
HINT: Observe the paintings/exhibits carefully
SOLUTION: Interact with the Yin Yang symbol. Grab the circle chip from the painting of the samurai.
ACQUIRES: White ball (Yang), Black ball (Yin), Circle Chip

PUZZLE: Lady Justice
HINT 1: You can place two objects on the scale.
HINT 2: The Square/Triangle/Circle chips will not work on the scale.
HINT 3: Are there objects in the room that specifically relate to "balance"?
SOLUTION: Place the yin and yang balls on the scale.
ACQUIRES: Sword

PUZZLE: Samurai Painting
HINT: Observe the shape of the slot.
SOLUTION: Use the sword.

PUZZLE: White Room
HINT 1: The coloured markings on the walls/shapes are not entirely random.
HINT 2: Consider the clue found in the octagonal room.
HINT 3: The old note clue denotes a pair of footprints and a blue arrow - look for and stand on that spot.
SOLUTION: Stand in various spots in the white room and look in specific directions to line up markings on the wall and shapes.
ACQUIRES: 4 (red), 6 (blue), 2 (green), 3 (yellow)

PUZZLE: Toilet
HINT: The gallery may have some counterfeit duplicates of paintings...
SOLUTION: Press the "mole" button on the Mona Lisa by the toilet.
ACQUIRES: Golden Key

PUZZLE: Finding key items
HINT: Carefully observe the room.
SOLUTION: Acquire the Square Chip (Painting of the man with an apple),
ACQUIRES: Square Chip

PUZZLE: Paintings of coloured squares
HINT 1: The paintings can be rotated.
HINT 2: There is a specific configuration that makes "sense". Consider the relative position of the paintings to one another.
SOLUTION: Rotate the paintings so that their edges lines up with one another. i.e. the right edge of the leftmost painting will line up with the center painting's left edge.
ACQUIRES: Circle Chip

PUZZLE: Golden Key
HINT 1: Observe your surroundings and look for a place where a key would fit.
HINT 2: Carefully inspect all of the paintings.
SOLUTION: Use the key on the door painting.

PUZZLE: Square/Circle Chips
HINT 1: The shapes can be slotted onto the white stand next to the treasure chest painting.
HINT 2: There is a rhombus shape fixed on the white stand. Look familiar?
HINT 3: There is a marking of an eyeball; does this look familiar elsewhere?
HINT 4: Consider the perspective of the eyeball in the white room: what would it see?
SOLUTION: Slot the shaped chips onto white stand as if you had a bird's eye view of the white room. Note that the cone would look like a circle from a bird's eye view. Square (Top Left), Circle (Bottom Left), Circle (Bottom Right). Use the Blue Keycard on the Black King chess piece door.
ACQUIRES: Blue Keycard, Painting (King Piece, "?", "?")

PUZZLE: Coloured locks
SOLUTION: Enter the numbers found in the white room.
ACQUIRES: Two Paintings

PUZZLE: The 3 Paintings
HINT 1: The paintings can be laid side by side.
HINT 2: There is an order to the paintings that makes sense.
HINT 3: Note where it shows an icon of the king chess piece, the knight chess piece, and "entrance", do these correlate to real life locations?
SOLUTION: Observe the layout of the room. The walls form the shapes of four numbers: 3 (religions, toilet), 4 (secret room), 5 (justice), 7 (Guernica painting, squares paintings). Enter 3457 in the final door to exit.