V0.3 Updated

Added:

-Ammo system: now with limited ammo.

-Ammo collectable powerup: increase 15 ammo per powerup.

-Repair powerup: increase 1 lives.

Updated:

-3 levels shield: shield now can defend 3 times of attack

-Thruster recharger: now with a rechargeable thruster for 3 seconds boost.

-Camera shaker: camera shakes when got damage from enemies.