I just spent a good hour or so playing through the demo of The Bourne Conspiracy, available on Xbox Live. The game is due to ship tomorrow, June 3rd, for the PS3 and Xbox 360.
My time with the game is what I'd guess a meth addict experiences while playing Grand Theft Auto IV, that is, it's all very twitchy and slightly confusing.
Any grace, polish, and roundness that a game like GTA4 or Bioshock has is exactly what this game is missing.
The game itself follows the movie The Bourne Conspiracy (the first one in the trilogy of films), reenacting some scenes exactly, but without Matt Damon, much less any other star/likeness.
The lack of the iconic image of Damon as Bourne fits perfectly into my feelings about this game: it feels like a B-movie version of better games. And, that goes for every aspect that I've played from the melee fighting, to gun fighting, to driving. It's all very 3rd grade ADD influenced with a physics engine that makes driving about as much fun as staring directly into a strobe light for half-an-hour.
We'll have to play more of the full game when it's released to really get a feel for it, and to decide if it's walkthrough-worthy. For now, though, count me as unimpressed.