Ah.. Yeah I probably need to adjust the shooting cooldown as well as the speed of your bullets. I was even thinking of adding a metronome so you could shoot the bullets on rhythm but I didn't have time. If I really want to take this idea to the next level I will consider adding different graphics/colors depending on which planet you are on. (Since I was thinking each collectible has to be found in a specific planet) Glad you found the experience challenging and rewarding though! :)