Interesting take on the theme, rat aliens! I like it!
I felt like exploration and interacting with the world was rewarded enough though, even punishing in some cases. When breaking the obstacles I would most often than not uncover enemies and only got a first aid kit once (Which I used to heal the guy that was injured). So when I needed more health, I would go look around for obstacles to break only to get damaged by the enemies that would pop up from breaking them. I also didn't understand the point of fixing the broken pipes, it would've been nice if they did something like reveal where the exit was or something.