3D FPS Tutorial

PLEASE NOTE: A error appears when selecting the level select button in the main menu. This error only appears when playing on WebGL, but does not occur in Unity or in the Windows build. 

This is my tutorial submission for the 3D First Person Shooter. My proposed modifications are:

1. New original music for both the main menu and in-game levels
2. Additional props that can be used to decorate the environment. 
3. At least two original levels