This is a hunt, not a bunch of links to follow. All the steps are solvable, but it does not meant they are easy. If you find something you cannot solve in 5 minutes, then you need to try longer, think outside the box. Every detail is important. When there is a text, you should understand its meaning, and not assume is there as a decoration.

If something seems "obvious" but doesn't work (eg. the 404), then it means you're not on the good track, and must try something else.

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And no need to ask for "help" if you didn't even try to resolve a hint. Saying "I can't understand X, please help" won't get you anywhere. But saying "I tried X, Y and Z, and it doesn't work, I'm running out of ideas" will probably show that you tried. And at this point I will help you (or make the hint simpler if I realise it's way too hard).