One thing is that since the only sound is turning on/off, and since it's so loud, it kinda startled me; I assumed there was no sound. I suggest making more sounds in general.
I must admit that the level gets quite boring after some time. 2 platforms, and occasionally a hole. Sometimes there's a battery inside. I think the game would be a lot more enjoyable with some more level design. As for all the background images and cutscene, I quite liked it.