Like many said, this feels like a great start to a potentially great puzzle game - but some mechanics are merely used once or twice and then the game ends. Very good one, still!
This is quite addictive - in a good way. But the Gold and Platinum Chain Awards seem to hard to me, because you lose the chain, when you get hit without shield. You get Evasion Expert (not getting hit for 120 sec) long before you can dream about a chain of 500 - let alone more. And it could be possible were it not for the fumes, but when you have no shield, they're bound to hit you with their spikes.
And also the hitbox of your ship doesn't seem absolutely accurate (is it a square perhaps?), so you get hit a lot, without actually being hit.
But this is nitpicking, of course, which I wouldn't do, if I did not like the game. 5/5
This game is surprisingly addictive! It's like Tetris in that: You could play it endlessly, but you eventually will fail. There is only one major thing that bugs me: The music stops, when you once hit 70 Mph and it doesn't come back. So I turn off music and sound and play other songs, which works fine. Also stats for Max Speed, Max Height and Max Multiplier at the end would be nice.
And also like Tetris, you can reach insane levels of speed, where everything is a blur. Fantastic and immersive game! 5 out of 5, of course.