What a fun idea for the theme! Such a cool mechanic, took me a while to understand the mechanic, but once I did it was very fun to play with the shadows and how they created a platform. The lasers I thought I had to jump over some of them in 3D, since I thought if they would hit you on the 2D dimension as well you would lose, but it didn't so that was a lot easier than I made it :D
With some polishing of the art and lot more levels, I could see this being really fun to play! :) I did end up bugging the camera for a second when you had to drop through that small hole, once I did, the character was down there already but my camera still shower the upper part. It was fixed when I moved a bit, but at first I didn't want to move, since I didn't know what was in there, it could have dropped me or something :D
Very good game and worked perfectly on the theme! :)