Eye of the tiger -WIP RMX - Djjaner and Gujit https://www.newgrounds.com/audio/listen/608387

gun, explosion, enemy hit, win, lose - Game Maker

player hit - RPG Sound Pack https://opengameart.org/content/rpg-sound-pack

boss blast - Laser construction kit https://assetstore.unity.com/packages/audio/sound-fx/weapons/laser-construction-kit-15966