The game and assets used to make the game are here
the assets used are:
Modular Spaceship 1: StarSparrow for the player character and missiles
Free Missile for the smoke from the missiles
Sci-Fi Sfx for the laser sounds
SF IMPERIAL Corvette F3 for the boss
Chiptunes Lite – Music Pack for the music
the other assets used were the assets that came with the Tutorial package.