SpaceFight

Its a 2D Shooter game

Revise I've made:

1. Add a health bar at the top of the left corner, it functions as a drop health while the player gets damaged. To make this work I made a lot of efforts such as adding a script, changing a little bit of logic of the original health, adding UI and so on.
2. I made changes to all environment's UI design and put a lot of obstacles.
3. Music and menu change