I like the concept! Your art is very good, and I liked having to try to aim my grenades while locked in a room to not kill myself.
Are the grenades supposed to kill civilians? I feel like it'd be a lot more challenging but more fun if it did.
I wish the doors were explained in the tutorial, I didn't understand why I couldn't go through the horizontal doors at first because all I saw was the lights. And it also wasn't clear to me that I could push things, I was confused why I was being slowed down.
Sometimes it felt like the controls were being unresponsive, and I had a lot of issues with the game freezing and lagging.
Otherwise, good job!