Nice concept! Initially it was a lot of information to take in at once, seeing zombies rushing at your house. Screen becoming red. Eventually i understood you can switch items using the scroll wheel, and then noticed you can attack using an item.
What would make the game more interesting eventually might be that you "build up" for a freezing night. So you gather stuff to build your defense. Instead of a continuous flow of mobs.
So like, during daytime you are 50% faster with everything, and you can see it becoming darker. Once its dark you are slow, and get damage by being in the dark. In order for you to survive and your house, you would have to reinforce it. Anyway, these are just random thoughts, maybe it sounds interesting for you.
Good work on the jam!