Credits

Artwork

MillionthVector (http://millionthvector.blogspot.com.br/p/free-sprites.html)

Player Spaceship
- F5S3
Enemy Spaceship
- att2
- att5
- blueship2
- blueship3
- RD1
- RD2
- RD3

Freepik

Weapon icons
- Bomb
- Trident

Creaticca Creative Agency

Weapon icons
- Shotgun

Smashicons (https://www.flaticon.com/packs/essential-set-2/)

Sound icons

Music

Sirius Beat (http://youtu.be/zIRo7NJ4uLE)

Tronicles

OBLIDIVM (http://oblidivmmusic.blogspot.com.es/)

(https://opengameart.org/content/space-shooter-music)

Rain of Lasers
Defeated
Victory Tune
DeathMatch

cyguration (https://modarchive.org/forums/index.php?topic=1620.0)

Tranquil Trance Express
Cold Stone