Fun game! It took me a few levels till I realized how I controlled the robot, which is part of the fun.
I like that as the game progresses new types of puzzle elements are introduced. It once took me a moment to realize where the robot was positioned at the start of a level, as it blended in with the structural blocks of the level (both have the same color, although the robot has a few pixels of green/orange/red). Perhaps you can increase the color difference more between these. A few times the movement did feel off.
Overall excellent game!