In my limited run, I didn't feel like I got anywhere other than to have everyone point out that Gregory was behaving strangely, which I figured out when I talked to him first. Unfortunately, I ran out of time before I found anything useful.
Using the keyboard to choose a dialogue option and then the mouse to pick it feels a bit too disconnected to feel intuitive.
I liked the fact that the NPCs stopped moving when you got close to talk with them, and it was fun seeing the footprints on the ground behind me as I walked.