Potential Audio Assets
https://assetstore.unity.com/packages/audio/music/dark-ambient-music-into-insanity-vol-1-284957#description
https://assetstore.unity.com/packages/audio/music/rock/metal-gothic-epic-song-affirmation-213781
https://pixabay.com/sound-effects/zombie-death-2-95167/
https://pixabay.com/sound-effects/zombie-breath-44855/
https://pixabay.com/sound-effects/zombie-1-22336/
https://pixabay.com/sound-effects/cute-little-baby-bat-189968/
https://pixabay.com/sound-effects/small-monster-attack-195712/
https://pixabay.com/sound-effects/flapping-39306/
https://assetstore.unity.com/packages/audio/sound-fx/horror-game-essentials-153417
https://assetstore.unity.com/packages/audio/music/rock/metal-gothic-epic-song-symbiotic-devolution-245015