I managed to beat this without looking at the comments, I came to read after though. There was a part where I interacted with something and it didn't make a sound and I thought maybe I hadn't done it properly. I said, I'm going to make a note of it, but I forgot now. I got stuck for about a minute or two because I didn't realize you could click on the banners in the room since most of the interaction are done with the E key. I did really enjoy this puzzle game.