I like the tutorial-like labels over GUI elements to get you going in the client. Apart from the gimmick with Zeno's paradox I didn't see much actual gameplay nor story here. Since I was alone on the server at the time I could not test out any combat. I also browsed the Warrens code but as a C# newbie I didn't find all that many comments or details explaining just where in the codebase the particulars of this entry were implemented.
Interesting as a building block for future developments!