I've been worried about that! I've put so many hints throughout the game about the buttons because I was paranoid people would get locked in the final room and think "what?" haha
I know from my own gameplay habits I would not have noticed the hints.
That's a tricky one - I remember seeing the spots on the ground in the playground, but without a way to go back and look at them again I would never remember the order. Maybe some dialogue that indicates it's worth remembering?
I've made a pretty big change to it while fixing the bug. It might not be entirely satisfying, but it will be more helpful. Going to upload v1.1.0 now.
