How many people worked on this game total?
Two people, myself as the programmer and level designer, and Khair E (@KhairSound at Fiverr) as the composer of the game's track for its only stage

Did you use any existing assets? If so, list them below.
Player damaged sound: https://freesound.org/people/InspectorJ/sounds/448226/ (author: InspectorJ @ freesound.org) Player explosion sound: https://freesound.org/people/ProjectsU012/sounds/334266/ (author: ProjectsU012 @ freesound.org) Player, enemy and stage background sprites: https://opengameart.org/users/ansimuz Using the following packs from Ansimuz: https://opengameart.org/content/phantasy-tiny-rpg-mobs-pack-2 https://opengameart.org/content/warped-space-shooter https://opengameart.org/content/living-tissue-background https://opengameart.org/content/space-ship-shooter-pixel-art-assets Player's ship: https://opengameart.org/content/space-ship-building-bits-volume-1 (author: Redshrike @ opengameart.org) Booster enemy: https://freesound.org/people/Dpoggioli/sounds/196914/ (author: Dpoggioli @ freesound.org) Game's soundtrack: https://opengameart.org/users/alexandr-zhelanov