E to advance dialog was not expected. I jumped straight into the game, wondering why I can't get past the first frame. I would add left-click or Enter. There were a number of times when I didn't know what I could or couldn't interact with. Something that highlights would help a lot. I love the idea of actions taking time, so if you don't follow a hunch and try to do the classic video game "talk to everyone" thing, you could lose.