I'm not sure about the setting - it appears to be a city in the Middle East around the time of the Crusades, which I half suspect is intended to cause controversy, as you're killing the European crusaders. The folks who complain about games like Grand Theft Auto are going to have a fit if you're playing an Islamic assassin. But the dialogue was so nonspecific that any interesting aspect of that was lost.
I've also heard that the game involves multiple time periods (whether through time travel or multiple characters a la Eternal Darkness: Sanity's Requiem, I don't know)
Though I don't typically play shooters or "sneakers," I've played enough to know that this isn't an impressive demo. The gameplay appears to consist of the following elements:
- Observe "cut scenes" of the figures talking (since you can move around during these, there's an interesting design decision - how do you ensure the player gets all the relevant information he or she needs?)
- Prince of Persia-style climbing and jumping around.
- Instantly lethal thrown weapons that apparently never miss. But instead of using these on the actual target, the player jumps down into a crowd of soldiers to kill the leader.
- Fighting enemies with tactics out of Hercules or Xena - stand around and wait your turn to fight one on one.