IGN: "it looks like Killzone 2 may be dangerously close to embarking upon the same road as its predecessor in offering ambience to the detriment of its other aspects. Traipsing through the level at hand, we come across an alarming number of crates, which although are all the better for showing off the cover system, belie some uninspired level design...................Similarly, some of the game's appropriations were sadly wide of the mark – when one of the grunts exclaims he feels 'like a spare prick at a gang bang' we couldn't help but squirm at the forced machismo of it all."
Looks like there is trouble in paradise. The preview doesn't say anything about AI, but it looked to be average at best in the new footage. Helghast were not using cover or any flanking techniques. Hopefully they can address this, because the animation/lighting/physics look great.