As many mentioned in comments, I would have put the camera angle wider, or more variety in the textures to show the movement. If you intend on improving the game after the jam, I would try make different kinds of enemies. But that's a general comment and don't affect the jam's rating, for a game jam you only need one. My game also has only one kind of character except the player.
That was fun! I brought 107 down with me!