How many people worked on this game in total?
1

Did you use any existing assets? If so, list them below.
Creepster Font from Google fonts Unity Asset Store: FPS controller from First Person + Third Person | Character Controllers Midgard Skybox Prime by LaFinca Low Poly Tree Pack by Broken Vector Low Poly Rock Pack by Broken Vector Freesound.org: Sad Lonely Ghost Crying.wav by BrainClaim -- https://freesound.org/s/267197/ -- License: CC0 Explosion_Debris_Short_Stereo.wav by Nox_Sound -- https://freesound.org/s/560510/ -- License: CC0 S29-04 Submarine ballast tubes blowing out explosively; good bangs.wav by craigsmith -- https://freesound.org/s/675793/ -- License: CC0 Electric Hum.mp3 by iliyabylich04 -- https://freesound.org/s/651342/ -- License: CC0 LASRGun_Retro Laser Zap Synth_Funky Audio_Sonic Spices by Funky_Audio -- https://freesound.org/s/729389/ -- License: CC0 Glitter Fade by D_Yonqui -- https://freesound.org/s/864523/ -- License: CC0 SpringBoing.wav by Slanted -- https://freesound.org/s/510496/ -- License: CC0 Pixabay.com: Halloween Piano Music by Tunetank via Pixabay Hard Halloween Beat by Tunetank via Pixabay Halloween Trap Beat by Sound4Stock via Pixabay

Has this game been submitted to any other jams?
No