The firearm models are very detailed and look great!
The design and lighting of the locations have been done really well, but in my opinion, some of the selected rendered shots aren’t strong enough. For example, in the set there might be a very emotional, well-composed frame (like the shot from under the couch in Hospital [Indoor Lighting Study]) alongside a weaker one, such as the graffiti wall shot. Keep in mind that you’ll most likely be judged by the weakest work in your portfolio, so adding a lot of frames just for the sake of quantity can be a risky idea
Overall, I’d recommend paying more attention to frame composition and experimenting with camera focal lengths.
The zombie walk animation feels unrealistic. Make sure to emphasize the shift of body weight onto the supporting leg as it steps forward. When animating humans, always use video references
You’re doing an excellent job, keep going!