I don't feel that strongly about it; I don't think it's [i]that[/i] bad but I do agree with a lot of what you said. Seeing the same enemies respawn in the same location over and over again feels very artificial, especially when it happens just because you've turned around. There are barely any unique environmental animations for enemies. They mostly just strafe around. The simplicity of the AI stands out. The Fallen have six limbs, but they rarely utilize them; they don't lean on cover or climb rocks, they just jump over them. They could, for example, slow their momentum when running behind a pillar by grabbing the edge with one of those extra arms. Though I understand that would be difficult and costly to implement. Edit: Great, now I do feel more strongly about it.