Awesome.
This is so bad ass. It gives it a more dark feel to it like Ridley always needs. Ridley is a dark carnivorous dragon lizard robot who leads a group of space aliens to conquer the world and he's equiped with an arsenel of rockets, missiles, plasma breath, bombs, and when he's pissed, he gets on his feet and starts plowing you with his razor sharp claws and his tail. Could you picture that with this song playing, I think so.
Although, if this was to be in an official game or even just a flash game.
You'd probally want to remove the hi hats in the very beginning of the song so it can loop and customize the ending to so it would be suitable for looping.