The concept is very good, and the idea of putting in keys and them slowly degrading is a very good idea! I would have liked it more if the turning was smooth, instead of snap turning, because an enemy would sometimes be in front of me, and I just couldn't aim at it because of the snap-turning!
It felt a bit easy, but that was balanced considering the enticing and fun scrambling to get all the keys and watching over the durability on them!
Overall very polished and fun jam game. I wouldn't say it has potential as a full game, but who knows! Good job!