Cool, glad to hear you liked it. I know that puzzle is a bit hard, but some people actually do get it immediately, while others just don't see it coming. I might add some sort of extra dialog clue if I ever do Ovid 1.6, which is unlikely to happen.
I probably won't get started on Act II until next summer because I'm extremely busy this school year. Things I plan on including once I get around to it are running, along with a more fluid movement system, a camera that zooms out in some places, voice acting (possibly), cooler level design that feels a little less constrained, slightly (not much) more epic story, and whatever else I plan on sticking in there.