2d shooter complete

This is my 2d shooter project. I made the following significant modifications:

1. Added additional level 3 

2. Added additional enemies on level 2 

3. Added additional enemies on level 3 with different movements

4. Changed skins of enemies on both level 2 and level 3

5. Added 2 asteroids as obstacles to maneuver around in the 3rd level

6. Changed music, and changed main menu background color

Credits: 

Created by Zack Machlis