I liked the greyscale visuals and I think you've done a lot for a 2 man team. The concept is there, but sadly it lacks the features in the current build. I could only find a way to switch between 2 parts of the body, rather than 3, but flying was overpowered and allowed me to skip all the platforming.
The concept is down in terms of the theme - I'd be interested to see where you go with it if you decided to spend more time on the project. :)