This is a game with a great concept, and poor execution. I mean oh one hand, the concept of needing batteries to survive going through the level is a great concept, that can be fleshed out so much, but on the other hand, the execution is done pretty poorly.
For one, the level doesn't even end. Secondly, you can stock up on batteries, making it very easy for you to complete the level.
Look, there might be more levels that I missed out, but if there are, I definitely couldn't find them.
I should also say that this isn't me making fun of your game for no reason, just me telling you that this game has so much potential, and you should continue working on it so it becomes better.