https://modworkshop.net/mod/25210 Based on this mod, I just changed out assault and intro!
https://www.youtube.com/watch?v=1jjnG2S-dmA Song used (https://www.youtube.com/watch?v=-lPZbkVidN4 alt upload)
Goes into " PAYDAY 2\assets\mod_overrides " (you can unzip the rar right in the direction!)