Save your money.
Let's see. My specs are:
Core 2 Duo 6600 o/c to 3.2GHz
Radeon x1900 XTX
2GB 1066 DDR2
Windows XP 32 bit
With this setup (well above the 'recommended' settings on the box) I'm forced to run the game at 1024x768, and everything set to 'medium'. Anything higher and the game slows to a crawl. Let me just say that the terrain (plants, rocks, trees, and whatever else you find in a jungle) looks like CRAP on medium settings. The players and weapons still look OK, but nothing I wouldn't expect.
It seems to me that the developer spent so much time making the game look spectacular on 'high' that they abandoned the other 98% of consumers that aren't going to be able to run the game with those settings. They should have spent more time working on the next setting down, so that even though we're not running IBM's BlueGene supercomputer, we can still experience some breathtaking graphics.
So much for the next-gen graphical experience!
Now let me get to the AI.
The magical suit you're wearing lets you change modes. There's a cloak mode, a heavy armor mode, and a strength mode for jumping (among others). About 15 minutes into the game, I activated the cloaking device so I could sneak up on some bad guys.
So here I am creeping along, fully cloaked, in the dark forest, sneaking up on an enemy soldier. Well actually, I wasn't sneaking up on him. I was still about 50 meters away.
Suddenly, even though he's little more than a stick figure on the horizon, he notices me, turns around, and pegs me in the face with his rifle.
I was CLOAKED. It was NIGHTTIME. I was CRAWLING. I'm in a PITCH BLACK FOREST. I was 50 METERS AWAY. How the f* did the AI not only spot me, but turn around and cap me in the face?
Stupid annoying stuff like that makes me quit and uninstall games. Which is what I did. Unless you've got a $2500 supercomputer, this is definitely not worth the hype. Maybe I'll play it again in 3 years when I can afford to run it on 'high' and they've made some serious AI patches.