Even though the game looks far from being finished, I think the core gameplay loop of hitting the tiles and then destroying the remaining bullets / enemies is fun and can become the basis for a good game. For example, you can implement a risk&reward system by giving away more points the longer you wait and increase the number of enemies. Also it would be nice to know the correct order for the tiles or at least to have a hint.
And the music is so good! The main menu theme goes hard