This is a very impressive and polished game.
It's a neat mechanic that having the life energy was a requirement to score. Overall, I think it would have been nice if each pumpkin had a clear visual color marking (like each wearing a colored headband), more than the particle effect. For consistency, the particle effect on the red pumpkin should probably have been red.
Sometimes the goal keeper would whack the pumpkin way up high bouncing a lot before coming back into game view. I'm not sure it's 'wrong' but it does eat up some game time. On other occasions, the ball got stuck behind the goal keeper which depending on who's goal keeper and if you had the life force or not, might leave your fate up to the other goal keeper.
Using the down button to accelerate your pumpkin feels very satisfying.
Really like the concept and the art assets.