Shoot or be shot

2DShooter project made following the course:

Game Design and Development 1 by Michigan State University.

https://www.coursera.org/learn/game-design-and-development-1/home/info

For the assignment i've added lives in the UI, the second and third level and the management of the story also creating a collectible you need to find in order to complete the level. 

All assets and original scripts were provided by the course. I've added functions and class to manage trigger with the collectible, pause and un-pause the game to insert the story at specific point.