Helghast behavior adapts to your approach, and they will stay in cover (or move between cover points) depending on your actions. They are capable of flanking, suppression, defense and some level of self preservation. Compare to COD enemies, then, which seemingly have one scripted method and path for each encounter, driven by one level of offense/aggression, and what seems like no situational awareness whatsoever. You'd have to severely distort the reality of the genre and COD in particular, to argue that the KZ2 A.I. is standard fare. Hell, the mechanical drones in KZ2 seem to have more usable battlefield smarts than your pissed off, preset and suicidal COD grunt.