(footnotes in the source code)
Entrance:
Let's start with the hint first. It's a QWERTY keyboard with an arrow from 0 to Z.
This suggests something in base 36 / 36 possible values / etc. since there are 36 characters (from 0 to Z).
Notice the '20's inbetween the clocks and how every time ends in :20 , :40 or :00.
How many possible clock positions are there if the minute hand is always on :20, :40 or :00?
12 x 3 = 36 apparently.
We can now pair the 36 possible values (0-Z) with the 36 possible clocks starting at 12:00 = 0.
Using this, it doesn't take long to get to the answer:
W2LLD0N2
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A 0 - there are 6
This is a scavenger hunt type of puzzle, requiring you to find 6 things (as hinted by the title).
We can see references to 2 different puzzle games just by looking at the page, which suggests that the 6 things are 6 games.
Looking at the source code:
We can see quite a few things. First, the source comment at the bottom confirms our idea.
The image itself contains the word "EIGHT" in a specific font.
This is the font used in ENIGMAPEDIA . Taking the 8th letter of the name gives us: E.
The text and the .css together give 1 letter, and the .css is called "one".
This text and .css are a reference to E.B.O.N.Y. , and "one" suggests that we take the first letter: E.
There's also a YouTube link in the audio tag, which leads to "infiniteXforever - Loneliness".
This is the 'main theme' of the riddle The String Harmony . Taking the 4th letter of it: S.
The image name is also strange, "imAge.png"... Why not change the A?
imBge.png is a reference to ZEST , and there's a "two" hiding in the bottom right red light: E.
imCge.png is a reference to NotHcom , take the appropriate letter of the name: C.
Finally, imDge.png refers to Hedpuzzle , with the image being the image of a certain level.
This is the image of level 1.
Taking the first letter of the name: H.
We now have the letters E, E, S, E, C, H. After simple anagramming, we have reached the solution:
CHEESE
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A 1
The image doesn't seem to be helpful. The source code however:
Googling the text in the alt tag gives us:
'Bit Planes'. This strongly suggests that the puzzle has to do with bit plane slicing .
Looking at the least significant bits of the image, we get the text "PLTSPHHON".
This is an egg page:
Extending the pattern (Point Line Triangle...) with 3 more gives us "PLTSPHHONDHD", and the word "Give" suggests .gif format. pltsphhondhd.gif.
We see a note, the Geometry Dash practice mode UI, and a .jpg in the bottom right corner.
The name of the practice mode music is "Stay Inside Me", combining it with the bottom right gives us:
STAYINSIDEME.JPG
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A 2
It's not quite obvious that we've reached A 2. Neither is it obvious what to do.
The name of the file is a hint itself, let's try to literally 'stay inside it' by looking at the metadata:
There seems to be a hidden HTML page inside the jpg. This is A 2.
Let's focus on the following line: "Why is the famous French building near 31°04'29.4"N 95°20'46.4"W ?"
First, the "famous French building" refers to the Eiffel tower.
After getting rid of the  characters, we can look the coordinates up on Google Maps:
The coordinates have lead us to Champions Rd, Lovelady, Texas. The important part is the road.
Combining the two parts of the sentence, we get Tower of Champion's Road , a Roblox obby.
The contents of the source comment are all loosely connected to said obby.
Using a wiki (or other resources), you can collect the following information:
"Dreemurrs United" is the name of the song playing on Floor 10 .
#00CBDD is the color of the frame on Floor 1 .
The song playing on Floor 7 is from Sonic the Hedgehog (2006). The "* 2" suggests that we double the outcome: 7 7.
"Take a break..." refers to Floor 5 , as it is the only Floor of the obby without actual gameplay.
"Embodiment of a True Hero" is the name of the song playing on Floor 4 .
Through simple A1Z26, we can convert 10 1 7 7 5 4 into the answer:
JAGGED
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A - End
At the end of the A branch is a jpg.
Looking at its metadata reveals the first part of the code to X:
FIRST WORD: HIGHLY