No offence, but dude. Learn lowpoly modeling. Super easy things like the flat surface of the gate have triangles all over for no reason. Just my two cents..
This is looking pretty awesome, Harbinger! Just my two cents, the yellow glow on the Sentinels' chest might be a bit too intense. Liking the scene, man. Definitely subscribing :)
The horizon is always at the height of your eyes; or in this case, the lens of the camera. Here are my 2 cents. A straight line should indicate the horizon, if the object is placed correctly anyway.
My 2 cents: in Russian word "Трассер" used as a slang name for tracer ammuntion. But in Russian language grammatical gender is used for a noun. And "трассер" word is a masculine gender.
Looking good, definitely seeing the improvement as you build it. My 2 cents is to add the floor molding at the base of your wall pieces. It was super noticeable in your earlier renders.
Have you looked into colored spec maps? The black and white spec map on the gun especially makes it look like plastic instead of a metallic material. My 2 cents.