It's a fantastic piece of work. Personally, my development team and I didn't plan to design this project in 3D for fear of finishing it, but I see that despite the limitations, you managed to integrate a huge number of features and mechanics. Integrated AI?...Awesome!
I like the low-poly environment; it speaks volumes about you as developers, and it perfectly aligns with the event's purpose: to allow the experience to be accessed via the web. I would have liked to see some introductory screens explaining the game and what to do at the beginning, without forcing the user to interact.
Otherwise, it's a great project, and it's a potentially enjoyable one for the future.