Simple but surprisingly fun! I feel like the difficulty curve is very well done, and it gets very intense at the end. I got a high score of 5072.
I like when games have a little intro like that, but it would be even better if the style was consistent with the rest of the game. Maybe you could have used the same sprite as in the gameplay animated inside a very short cutscene. Also, I noticed the pixel size is inconsistent in the game, but that's nitpicking at this point.
Overall it was pretty good, especially for a first game jam! Keep it up, and I hope to see you in a future jam!