I'm sorry for how long it has taken for me to get back to you.
What I mean by visual indicators is, for instance, the toggled status of a button, the health of a player on their character icon, the unavailability of an option ETC.
Another thing to look out for which I neglected to mention before is exclusively visual puzzles. I.E a puzzle that you couldn't do blindfolded. Asking the player to look at something, move colored tiles, pick a picture out, remember the detail of a painting that wasn't described in text ETC.
Just things to check for. :)