Honestly after Chinatown the game becomes unbearably repetitive and boring. It doesn't seem like you need skill, just luck to not get an area completely covered by cars and bombs or to get a sign that DOESN'T have cars under them. Needs more strategy to it, like weapons for the car to get things out of your way. It was a mediocre game to me.
It was an entertaining game, though short. I'd recommend improving the graphics (more streamlined), adding more levels, making the levels less point A to Point B. I don't see how upgrades would be necessary. Good try tho.
I gave it a 1/5 for two reasons: 1) Drowning should reset your orientation, not keep you facing the direction you were heading when you drowned, that's just bad programming 2) The AI cheats, in some levels the AI seems to have permanent turbo. I don't like or recommend this game.
I finished career, didn't get the badge crimson. It's not about the games 'hardness' its simply about the idea of the game being flawed. I'm the first to admit when a game is good, but I'm also the first to tell you when it truly doesn't deserve badges.