This game is one of my favorites, I adore the implantation of typewriting, and even typing out your score in the end! The sounds and the filling out effects make it so satisfying to play as well.
A thing I would maybe consider would be separating the end sequence with the game. At first I didn't really noticed the game ended, so maybe a background change or a color change might help the player understand that what they're typing out is in fact their score.
Great job!