Run down the stairs, take your predefined position and start shooting. I see no flaw there. Its just nice scripting. ;)

Honestly the video looks like it was played below normal (i could be wrong). I had to go back and try kz2 on default settings on that final assault stage and here are my observations: enemies would yell different things like "oh shit" and run to the next cover spot when I would throw a grenade. Anytime an enemy with a turret spotted me he was wanting to kill me at all costs, but also attacked any of my friend AI's that would try shooting at them, and they would also hide themselves behind the metal plates of the turret when under heavy fire. Everytime I was just doing the ol' come outta cover, fire and hide, reload, etc, I would be welcomed with a grenade, sometimes followed by a rush and being flanked as well. I didn't encounter anyone running away from me and not shooting, if anything I would get melee'ed (2 melee hits=death on default). On 1 mode further (Veteran), enemies are VERY aggressive, highly accurate and are comparable to real players (not the 12 yr old MW2 noobs) with a vast array of tactics. I have yet to beat the game on expert but I got demolished on the area before I have to man the tank.

In conclusion, from what I have seen of the AI in KZ2 vs Halo CE, Halo 3 and ODST (played very little of SP, did more MP), the AI has seemed to have an edge for ME on KZ2, as I was unable to run and gun as much as I did on the Halo series, both on default settings. Another observation is that while on cover, the KZ2 enemies are fairly unpredictable as to where they will pop out half the time, as they will either blind fire, switch position, or run to next cover spot.

Back on the main topic, Reach seems very promising from what I read on Game Informer. I am interested to see how day and night will affect overall combat, how AI will react to stealth vs run and gun, etc. I would also like to see if they do something to change up seemingly scripted events. Back when I played F.E.A.R (original) I was amazed by the AI that game had as well as the ability to make every play through different outside the scripted events. If on 1 playthrough an enemy would pop behind that wall, on the next one he wouldn't but instead he was behind a door down the hallway, etc. I see Bungie really enthusiastic about this game and when that happens, generally speaking, we get a beautiful product.

Oh, one more game came to my mind. Mount & Blade , potentially hundreds of invidual AI controlled npcs.

(I know that its lagging. Capturing high resolution video is a bit cpu intensive task. Oh and why they are spreading like that? If you look closely you can see how player commands his troops to take positions, charge etc. Yeah, you can do that too.)

I can say for certain that you won't see anything like that on current consoles. :D

demonfox13 what you are describing is typical FPS stuff, there is nothing special about it. The guy says his video is on Elite difficulty in the comments. And you basically admitted that you didn't play much Halo SP, so how would you know if it's any good? Try running and gunning on Legendary (SP not CO-OP) and see how far you get.

Halo has always been known for the AI, KZ2 for graphics. Play a few more shooters and you'll see what I mean.

You got a ton of examples in this thread.

Plus, I don't really see how it makes the game better, you are generally focusing on a very small group of enemies at a time. Who cares what the other characters are doing, you won't have one saying "hey look at me! I'm gonna do something smart!"

You failed to read my comment. I stated that Halo 2 was the ONLY halo I did not play fully SP, all the other ones I did. Please go back and read. As for that being elite I call bs as the AI on elite is extremely aggressive, especially during the assault on Visari's palace. As for run and gun on Legendary, yes that would be suicide for pretty much any FPS (exception is Haze.....god such a horrible AI). Halo is probably known for AI on the xbox community but overall definitely not, FEAR takes the cake on that one, KZ2's AI is easily comparable to Halo's.

actually no, if they cover it's destroyed,  they move around find another, and when they felt they  a advance they rush into you.

Ugh, no it is not. Those "stupid" charaters you see in Heavenly Sword, do the same things the characters do in Halo. The main difference is the melee to FPS type of fighting scheme. In most FPS's, you don't get stunned, or stopped, every time you get hit, so multiple enemies are allowed to attack you. In a game like Heavenly, you will get stunned/stopped when an enemy hits you, if all the 100's of enemies around you were allowed to all attack (which granted would be more realistic) the game would be impossible. This doesn't mean they are "stupid", they still follow a set up protocols based on what the player character is doing. The reason enemies in Halo search for walls, is because it is a shooting game, and walls can provide cover. Why would a character in Heavenly Sword search for a wall to hide behind, when they need to be at melee range to attack.

No, the main difference is that the enemies in Halo are always trying to survive and move (something that you can do from any distance). There is no excuse to compare both AIs because they are different and they act different (the fact that the enemies in Heavenly Sword won't try to survive makes this comparison an absurd), this has nothing to do with the type of game.  And no, it wouldn't be impossible if they know how to make a balanced game. The problem is that Heavenly Sword is just a button smash game trying to be impressive using a high ammount of dumb enemies that will wait for your attack. 

@Deneidez

It' is a flaw, if the enemy is in front of you he should shoot and not ignore the fact that you are there and go to his position, it's an AI problem. Using a better AI the character will ignore the pre-programed actions and attack you because almost every FPS game has pre-programed actions and enemies that should go to a pre-determined position. For example, you can clearly see that the enemies has a pre-determined position in COD (and some of them has a path to follow) but they will attack you even if they aren't in their positions, they won't be limited by the pre-determined actions because they have a good AI. This is not an excuse, the AI is bad in KZ2.

@demonfox13

"KZ2's AI is easily comparable to Halo's."

Only in your mind.

OK this better end this once and for all. This is a list of the top ten most influential AI games and is from a website that is based completely around the discussion of Artificial Intelligence. Actual developers use this site as a discussion board for programming dynamic AI's in video games.

http://aigamedev.com/open/highlights/top-ai-games/

Here is another article on their site about Halo 3

http://aigamedev.com/open/reviews/halo-ai/

You can deny it all you want but Halo has been known throughout the gaming industry for its exceptional AI. So for some of you to doubt that Halo Reach will have AI as good as Killzone 2 when the previous Halo's still have more advanced AI in certain aspects is a joke.