The game does get harder as the enemy attacks get faster and he waits for a shorter period of time. I wanted to implement some other phases as the game progresses, but I had to wrap up my project way before the deadline so I didn't really get enough time. I'll be sure to add some later though. As for the music I agree, but I'm still learning a lot in that area and need to improve a lot, but thank you for pointing it out. Thank you for playing and thank you for the tips!