At The Speed Of Light cover ENERGY. It needs more energy.
At the Speed of Light is a fast-paced, legendary, and exciting song. To correctly remix this song, you'll need more action. That's what this is missing; sound effects, faster and louder drums, powerful instruments in the fast sections (like electric guitar or techno sounds, depending on the style you choose), and better transitions.
Although this is not the best remix of At the Speed of Light, I appreciate the effort of rewriting every single note of this song, because we all know that's a long process.
Hope you consider my review, and good luck on your next songs (if you make more) ;)