I should cut the score for using Unity, because... look, Unity games tend to run horribly slow, even simple ones. I have low end PC I bought like 6 yrs ago, so i could not play this game since it runs at 6 FPS. I myself prefer high performance engines like LIBGDX. Game I posted on Newgrounds, Anubian Zero, runs smoothly on every trash PC because it is powered by CraftyJS. I like your game though, first game and it looks so appealing. You seem to use free assets but still, you use them well.