Attribution:

Underwater shop music: remixed using audacityteam.org from
https://freesound.org/people/infobandit/sounds/28693/ "sonar.wav" CC BY 4.0, and
https://freesound.org/people/Kinoton/sounds/393819/ "Underwater Ambience" CC 0

font:
https://www.dafont.com/8bit-wonder.font freeware by Joiro Hatgaya

sound effects:
generated using https://sfxr.me/