I think the mechanics of this game are super neat! Reading some of these other comments and seeing that you made the game in such a short amount of time is really truly impressive. I don't think I've seen a game do this before!
That being said, I do agree with the general sentiment that a better tutorial would definitely help the game. Since the mechanics are so novel, it would definitely help to have them be explained a bit more concretely. Having to attach the battery to the shield was especially confusing, as with the minimalist art style, the tutorial image was hard to decipher. Once I kind of understood the gameplay loop, though, I was having a good time!
Part of me wonders if the game would benefit from some handmade levels as opposed to just randomly generated ones - When the game first started, and I had to juggle the unique mechanics along with the enemies that all have their gimmicks and no real sense of direction, it was hard to not feel overwhelmed. I think randomly generated levels are definitely impressive, and a fun thing to include, but having at least a few hand made levels thrown in might help create a sense of purpose in what exactly the goals of the player should be, if that makes sense?
I feel like I'm being a bit critical, but I want you to know that the mechanics are really, really cool, and I'm so into the look of the game. I think this could absolutely be something special. Looking forward to what comes next!
I played it on stream around 5 minutes in: