Invasion 3D Shooter

Modifications:

1. I've changed some enemies prefabs and fixed a bug with projectiles disappearance(just add a gun to ground shooter enemy).
2. I've made a new particle system in enemies prefabs, such as death effect.
3. Added a new epic soundtrack
4. As well, I've made a settings with two volume sliders, one -  for music, another one - for all sound effects
5. Made a design for two levels