Love the music, those stock FL horns and strings will always bring me joy. Your experience in animation and graphics really shines here, the backgrounds in this game are fantastic! As for the gameplay, I feel like increased speed and a variable jump height (by holding space longer to jump higher) would make it even better. The boss fight was a welcome change of pace, but after a while it became the same "wait for there to be an enemy at this Y height, then jump and shoot" gameplay that the rest of the game had.
Really fun to see you make your first game jam submission! One of us! One of us!