Mod for the 1.1.4. Steam Version of the game:
Playlist showing the unused stuff I included:
https://www.youtube.com/playlist?list=PLsE8sATaQXywLlPDXnj-shrEAvysUp2a4
Download:
https://drive.google.com/open?id=1dF63hTS3w5K5pO9TB_RgSn3jLWIg2XvS
Edit:
Included another version of the mod so that Wally's and the Devil's behaviors are on Regular instead of Expert, this was done due to an issue where the game softlocks on their expert difficulty.