I really like the concept of this game, great job! It was a good idea to add the pumpkins in too to give a reason to move around apart from lining up the sword to hit the enemies. I reckon if you added a temporary powerup that adds another sword on the other side, or some other sorta weapon as a pickup too, that could add to the enjoyment of the game.
Overall, fantastic work for getting all that done in 3 day! Keep up the great work :)