GitHub - r-pufky/payday2-secret: Information related to solving the PD2 secret.
PAYDAY 2 - Hoxton's Secret Mask addon - ModDB
Steam Community :: Guide :: PAYDAY 2 SECRET ENDING
Accidentally triggered The Secret during Crime Spree... On the bright side, I noticed a cool plaque dedicated to the people who first discovered it. : r/paydaytheheist
Payday 2 Secret Ending: The Complete Guide to Unmasking the Hidden Heist Finale - Cheat Code Central