I noticed that you got the kill one of your targets like a true assassin achievement. Yet, you said you just run in and kill all the guards all non-stealth. But with that fat guy(not a spoiler) I just ran up and shivved him through the neck. The name of that achievement is Blade in the Crowd, that's what I did, so how did you get that achievement? Also, I saw that you didn't get the last 10 minutes in open conflict achievement, that one's soooo easy, but a bit boring. Kill all the guards except for one, than slowly run to the Anarchists or Rebels or whatever they are, they'll hold him, than just keep a rebel between you and one of the guards for 10 minutes. Easy, just a little boring... What's the Disciple of the Creed achievement? Do you have to kill them all with full health? Also, how'd you get the Eagle's Challenge Achievement(25 kills in 1 fight) they always run away from me after I killed 15 or so of them... I love this game. I hope they do have a sequel. If they do though, it had better be more replayable.
EDIT: Well, I got the Blade in the Crowd achievement, you just have to stealth assassinate a main target. That official put me over 3,000 gamerpoints(3,005 to be exact) It was also the 22nd out of 44 achievements I've done so far. 1/2 way done.
EDIT 2: Man, speaking of Assassin's Creed achievements. There were a couple people over at the Xbox forum that didn't think that it was possible to get the Eagle's Dive achievement in the training yard, than others said it was, so I made a video of me getting the achievement in the training yard. Than I went to my videos on Youtube and was looking over all my videos, does anyone remember
that PSX emulator video I made? That one has 3076 views.

