Thanks so much for trying it, also nice to see a fellow Construct dev here.! The little scrap of paper was for some hints, but I do know that it's not straight forward. The first column represents the pattern how to set the related symbols and the other two columns are how to set the remaining switches.
I like the idea about animating the action icons and adding the scanline to make it match the rest of the 'projected' HUD. Thanks for the comments on exploration vs dialogue, I do want both, sense of wonder and story.
I am thinking doing another version or chapter for the Adventure Game Jam, so that will continue / update it.