In the Need for Spear game, we have used and manipulated some assets, sounds and music. Below, you can find their sources.
https://www.deviantart.com/ashpwright
https://www.deviantart.com/cherrypiewithpoison/art/MMD-Genshin-Impact-Polearm-Spear-Set-DL-861832077
https://drive.google.com/drive/folders/1lx02_w9TFTYdR3aggI1gbXcLr69roaNV
https://www.spriters-resource.com/
https://www.youtube.com/watch?v=hLwvgqnHLEA
https://mixkit.co/free-sound-effects/game/
We want to point out that this project is developed for educational purposes and there is not any commercial usage of them.