A great idea, forcing the player to switch between the two projectile types made for an interesting mechanic that was also quick to pick up. I found the controls to be smooth and intuitive, and I think the trajectory guideline was super helpful for giving me a good feel of control and precision. I also loved the music and sound effects! My only nitpick would be that the boomerang projectile could be a bit hard to see at times, especially in the first level when all the enemies are yellow too. Great work!