2D Shooter

My modifications:

1. Powerups: I added powerups that have a chance to spawn when the enemies are killed. The three powerups I added either increase the player's bullet size, speed or increase the score. When the player picks one up, a notice appears that tells the player what they got. 
2. Extra lives: Added extra lives when the player gets high enough scores. 
3. UI: Changed the UI to include the lives the player has, the enemies they need to defeat and the level they're in 
4. Added an invincibility animation  for the player to make it clearer when they can't be hit
5. Created 3 designed levels
6. Added a Boss in level 3 which can spawn enemies and shoot directly at the player. They have a health bar indicating their health. 
7. Fixed a bug where enemies can go through walls

Created by Vincent Ha