I think this game is seriously so beautiful! I love the gentle color palette and soft halo glow around the main shooter. The way you styled everything from the enemies, bullets, sound effects, and health bar/font work very well together. As for the waves of emotions I think you very successfully brought me through two. The first wave was extremely relaxing and I was really enjoying the slow spawn rate of the enemy so I could just explore the map. The second wave of emotion was when the sound/light transition hit and I believe the screen said that the tower had come to life and now more enemies were flying at me. This immediately got my heart beating a little faster and the whole mood was shifted into one of excitement and determination. My only real critique right now is that I can't quite point out where the third wave of emotion was. Other than that this is awesome :)