Hahahahah the machine gun is too loud indeed hahahah I have to change that. Yes, it is my first game. It took more time than I imagined. Making games is not that easy! haha I will change those things in the next updates, thanks for the tips and feedback! I've played your game too, it was different from the others I've played, love it! I would suggest something like a "roadmap" indicating how many waves are left until the boss or something like that! You may as well drop some enhancements to the player as he passes through levels/waves. Cheers!