I really love the creativity of the last level. An idea I had for the robot that chases you, there could be a puzzle where you have to deactivate him on top of a button that opens a door. You could make the button that deactivates him retriggerable to get him to activate/reactivate at the location you choose as he chases you. Maybe the robot can bounce your projectiles off of his surface and you can position him in a specific location in order to fire off a shot at him that bounces off toward a location you would not be able to shoot at normally. There is honestly lots of creative ways to take this. I believe puzzle games in general should be built on top of creativity and that's exactly what I see in this game, well done!