Even though it seems you did not manage to do as much as you planned, you can be proud you posted a submission to the jam that works very well.
The visuals/sound are a bit rough but the balancing and gameplay ideas are really interesting! Even without being able to switch size in the middle of a battle, you can still perfectly see how scale would affect the gameplay if the game was larger.
Oh, and the self-deprecation through the dialogs is pretty funny.