They just ran out of things to do.
I've waited for this game since it peered its head on previews, and once it came out i hit the store to spend my $60, boy am i dissapointed.
You will notice the game will drop frames quite a lot, before you even delve into the gameplay aspects which is where it became a big turn off for me there are no stealth aspects at all which i dont get when u consider the name of the game?! its just hit your target then run like hell or take on your foes, thats about it
plus there are only so many tall building you will want to climb before you get bored and the repititon of finding the bureau, finding information on your target, then back to the bereau for your target this goes on throughout the whole of the game, while the free exploration of the world is a nice touch your still only going to one of the three cities either way so it would of been better to skip this out alltogher in my opinion as you will get bored running to find a horse, then doing some more on horseback to your destination....blah blah blah....., then constant civillian save mini missions, preachers spouting same old rants (quite loudly) over and over in the streets, which you will still hear from any buildings you wish to climb.
Then there is the cut-scenes which live on forever not really making you feel like your getting anywhere close to the story of the game.
So overall it leaves you feeling like they really could of done so much better with this game, its as thought they put too much time in creating the world and not enough thought went into the missions, its like oh shiz we forgot about the missions, i know lets throw random crap in nobody will notice the world is just toooooo beautiful!
Reviews have been quite high for this game as though they are scared of upsetting someone being as they got an exclusive on the review perhaps?
Anyway give it a rent before you buy i say, and hope the next installment will be much much better!