I love the camera rotation and movement. I am not sure why but it feels a lot smoother than anything I've played in unity before. I enjoy the style of the game but the lack of sound and player feedback make it a bit hard to immerse myself in the game. The first level seems a bit out of theme, I was a little shocked going from level one to level two but that may just be me. The enemy reactions seem a bit slow and too close range, I would recommend having them start shooting at you when you shoot them as well as the bullets going a bit faster as having no crosshair and a very slow bullet made it very challenging to consistently hit the enemy.
Just a bug probably but the cars in level two receive the same particle effect as the enemy's when shot.(I doubt you meant for the cars to bleed but maybe they're weird in this universe)