So in your sessions did you just tell the players what they had to achieve, hand them some sort of brief, have the assassin break it down for them, or did they have to figure things out as they went along?
Just curious. I'm running this tonight and haven't decided the smoothest way to do so. For a demo, I figure just telling everyone is enough, but in a campaign I can see doling the information out on a need to know basis with some objectives revealing new ones with big yellow exclamation points over the NPC's heads.