Thanks a lot <3 <3 <3 !
All the animation come from DOTween plug-in for Unity(http://dotween.demigiant.com/), which allows you to create simple yet satisfying animations with only one line of code!
It saves a lot of time and add a lot of juiciness to your game!
It also apply to colors, so I only used it for the enemy projectile for example!
And just to be clear, I did not create the music, I only downloaded it from envato https://elements.envato.com/audio
I wrote an article about some tools I use a lot in Unity in my jam (5 min reads) :
https://blukulele.itch.io/vectorial-rush/devlog/270414/polish-while-saving-time-...