S.T.A.L.K.E.R. - Image #700,673

they also said the A.I was so incredibly complex, the player was unable to advance, since they could easly flank you, force you out of cover, exactly blew grenades in your face, and know how to fight you depending on the weapnon you had, (a.k.a, have a sniper rifle? they rush you)

"I aym sooper sneaky spy guy! Watch me destroy these pesky byandits!"