How to get Oliver's archive key and explanation on how to solve the codes || Guilty parade

Описание

I don't own any of this. The only thing I did is play through it.

It took me at least 2 hours to find out that you don't need the posters for this code.

I also couldn't find any video explaining how they solved the code. That's why I post this. ( I wish I had someone to explain to me how they solved the code)

If there are any spelling mistakes well too bad can't change them now. I tried my best to avoid them though.

Made for a poor friend and for those who can't solve the codes.

Game: Guilty parade