Pre 0.13 i was impressed with there intelligence (albeit annoyed at there super vision)
they would work together to flank you, or one would try to flush you out while the other would wait for a clear shot
but now playing on standard settings the enemies have lost nearly all cognitive function. on multiple occasions i have seen 1 or more standing around while i kill the guy next to them with the sawn-off.
its not all bad, Infact there're changes i love! like they will push into buildings now! in ITR1 or pre 0.13 you could just go hide in a small building and you would be %100 safe.
but now there is no where to run, no where to hide, you fight, or die. its great!
i also love the idea of some of them staying hidden in the buildings and waiting to ambush you. the devs should absolutely dig a little deeper with that idea!