Enjoyed the game, and the shooting was really satisfying!
Would suggest potentially making the robot emit some sort of movement sound as it snuck up on me a few times and only made noise when I shot at it. If you had more time potentially adding a minimap would be helpful or more different landmarks, as it was easy to get lost since most of the hallways look the same. I made it to rescuing the zombies but didn't make it to the door, and didn't want to continue trying since I wouldn't really remember how to get back to where I was.