SPOILER ON HOW TO BEAT THE GAME PART 5:
So now you're down to the final stretch. Take your 4 golden pieces and place them on the black thing next to the cat figurine. It's not too tricky, shouldn't take long. Once you do that, the door on the left should open up. This contains the vial of water. Use the vial of water on the pot where you placed the seed to let it grow. I'm not 100% sure how it works but every time I turned my back to it, waited a second or two and turned back at it, it grew slightly. So I repeated this around 3-5 times until a flower grew. On that flower you'll see a symbol on the petels. Bingo, symbol #3.
Combine all 3 symbols - The paper, the blimp and the flower. Use them on the keypad next to the big blue doors with all the symbols on them.
Congratulations, you've completed the game. Enjoy the really random and odd cutscene.
SPOILER ON HOW TO BEAT THE GAME PART 4:
Click the magnet and string in your inventory to combine them. Go to the jar with the key inside of it. Once you get the key, open the white chest next to the jar. You'll find a piece of paper. Take the matchbox and go to the table with a candle and light it. Then take the piece of paper and click on the candle. It'll reveal a symbol.
Turn your attention to the ship in a bottle. It should tell you the name and a year. The year corresponds with the numbers 1-12 on the card box. The 3 numbers (mine was 1910 for example, so 1-9-10) will need to be pulled down to reveal that 3 cards. Make note of which ones, whether they're Diamond, Clubs, etc and the color. Write them down in order. Move onto the door to the right of the windows and just match them from top to bottom. Grab the binoculars.
With these, you'll want to go to the window on the right and use them on the blimp. This show another picture. Symbol #2.
SPOILER ON HOW TO BEAT THE GAME PART 3:
Open the aquarium by clicking the top of it. Click the fish food and place it inside of the aquarium. It'll make the fish move. Once the fish move you'll see statues of women in a circle with various shapes and symbols. There should be 3 women facing away from the circle, so look for the 3 facing outwards. Those 3 symbols, remember them and then leave the aquarium and instead go to the box that's to the left of the big bookshelf where the cat statue is located. On that box you'll see symbols like on those statues. The 3 you wrote down/memorized will have to be entered on that box. They either have to be pressed up with the others are down, or be pressed down while the others are up. I apologize that I can't remember how, but it shouldn't be too big of a hassle.
This box will open up granting you a magnet and a golden piece.
SPOILER ON HOW TO BEAT THE GAME PART 2:
While looking at that bulletin board, there's a picture with a box on it that shows a sheet being flipped open. That's telling you to go to the box with the playing cards labeled 1-12 and click the bottom left corner. It'll reveal a word.
Write down the word, then go to the picture of the lady and look at the letters on the corners. Write down "top right, top left, bottom left" for where the letters are located. Let's say the word was "CAT" and the letter C is found in the top right corner, A is in the bottom left and T is in the bottom right. I'd write down "top right, bottom left, top right." Go back to the desk where the playing cards are and click the drawers. Above them you should see 4 symbols that are in the shapes of corners. Press them in correspondence of what you wrote down. Using my example, I'd press them in this order: top right, bottom left, top right. Ut'll open up the top drawer which contains fish food.
SPOILER ON HOW TO BEAT THE GAME PART 1:
Look at various areas for the 4 golden discs with holes and things sticking out of them (some are hidden within the puzzles so you'll have to wait to fully collect them all). You'll have to figure out how to arrange them yourself when you do find them, but it's not too tricky. (place them on the corrosponding black things near the cat figurine). You'll receive a vial of water which you will use later.
While searching you should've found a seed and a matchbox. Place the seed in the pot and wait until you get to the vial of water to continue this puzzle.
Look at the wall with the stuff posted all on it with thumbtacks. You'll be able to click on the bottom left object that contains string. I only played the game twice so I'm not sure if it spawns in any other corners, but it's always orange. You can't miss it.
This game is so fun... can't... stop... playing. I just wish you didn't have to pay actual money for items. It's not a big deal, since you can play normally without spending cash, but the bonuses you get are huge.