I actually post this to try to get some hint or clue with the puzzle "Binary to hexadecimal", Kiyopawn, my guy, can you help me to sort this out?
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If this is Mission 2.
There are papers about the 3 aliens you met at mission 1. You may notice they each have 1 highlighted letters colored blue.
You can also see in the basement, there's a paper that says:
# + # + # = 4 digit passcode.
The number signs are colored blue as well. I think you can figure it out from there.