The game places a heavy reliance of just throwing massive numbers of enemies at you and there are sections where Guerilla Games have taken the easy way out of throwing an infinite number of respawning enemies at you, until you manage to complete an objective and it is in these sections that the lack of enemy intelligence makes itself abundantly clear. (gameondaily.com)
But the best example of increased enemy intelligence and interaction comes from those pesky Skags. (wolfsgamingblog.com)
Cleverly, each mission allows player to tweak numerous settings, adjusting everything from enemy intelligence, player health, to the frequency of enemy grenade usage - even sharing these variants across the online leaderboards. (tech-gaming.com)